Forces
What is a force? Include examples.
S =d/t (speed equals distance over time)
Friction is a force that acts in a direction opposite to a moving object. It causes moving objects to slow down and/or stop, and occurs because surfaces are never perfectly smooth. Examples of why it is useful are that it prevents slipping, allows vehicles to brake, slows moving objects (sometimes useful), reduces falling speed (sometimes useful), builds a fire, and writes notes. Examples of why it is harmful are accidental fires, falling/crashing, car engines/factory machines can overheat or break, and erosion and weathering (sometimes dangerous).
The effects of a balanced force cancel each other, and they do not cause a change in the object's motion. If the forces on an object are balanced, the force is zero. The effect of an unbalanced force (an individual force that is not being balanced by a force of equal magnitude and in the opposite direction) causes a change in the object’s motion.
Sir Isaac Newton.
Motion is a change of position in a certain amount of time.
A force is a push or a pull, or a twist. Forces give energy to an object, causing it to change its position. Examples are: friction, gravity, magnetism, buoyancy, and air resistance.
Gravity is a force of attraction between all objects in the universe. All objects are affected equally by this, and all objects fall to the earth at 10 m/s doubled.
Buoyancy is the tendency or the ability to float or sink in water or in any kind of other fluid. Heavy objects can float because of density. Density is the amount of matter (mass) within a space (volume). The density of water is 1g/cm3. Therefore, objects less than this float in water, while objects more than this sink in water. Density can be calculated by D = m/V, or that density equals mass over volume. To summarize, objects float because they displace water by the downward force of gravity, but there is also an upward force of buoyancy acting against the downward weight.
Air resistance is a type of friction which opposes motion in air.
A measure of the force of gravity on an object. Weight is a force. So, the units are newtons (N). Weight changes if force of gravity changes. For example, your weight is zero in space because there is no gravity in space.
A magnet is a piece of iron, nickel, metal, or cobalt with aligned domains. Magnets have poles, and N near S attract (attraction) , which are unlike poles. N near N repel (repulsion), and S near S repel (repulsion), which are like poles. Earth acts like a giant magnet. This is because of magnetic fields which are created in the core. The magnetic fields of Earth are huge, and extend a great distance into space.
A measure of the amount of matter in an object. Mass is not a force. Mass is measured in grams (g). Mass never changes. Your mass on Earth is the same as in space!
Ways to reduce friction are lubricants (a substance which reduces friction when applied to an object) such as oil and grease, polish or wax which reduces surface roughness, ball bearings such as skateboard wheels, and streamlining such as fast vehicles and fast-swimming marine animals, which reduce fluid friction since the shape is changed so air or water resistance is reduced.
Iron, nickel, metal, or cobalt.
What is a motion?
S =d/t (speed equals distance over time)
Friction is a force that acts in a direction opposite to a moving object. It causes moving objects to slow down and/or stop, and occurs because surfaces are never perfectly smooth. Examples of why it is useful are that it prevents slipping, allows vehicles to brake, slows moving objects (sometimes useful), reduces falling speed (sometimes useful), builds a fire, and writes notes. Examples of why it is harmful are accidental fires, falling/crashing, car engines/factory machines can overheat or break, and erosion and weathering (sometimes dangerous).
The effects of a balanced force cancel each other, and they do not cause a change in the object's motion. If the forces on an object are balanced, the force is zero. The effect of an unbalanced force (an individual force that is not being balanced by a force of equal magnitude and in the opposite direction) causes a change in the object’s motion.
Sir Isaac Newton.
Motion is a change of position in a certain amount of time.
A force is a push or a pull, or a twist. Forces give energy to an object, causing it to change its position. Examples are: friction, gravity, magnetism, buoyancy, and air resistance.
Gravity is a force of attraction between all objects in the universe. All objects are affected equally by this, and all objects fall to the earth at 10 m/s doubled.
Buoyancy is the tendency or the ability to float or sink in water or in any kind of other fluid. Heavy objects can float because of density. Density is the amount of matter (mass) within a space (volume). The density of water is 1g/cm3. Therefore, objects less than this float in water, while objects more than this sink in water. Density can be calculated by D = m/V, or that density equals mass over volume. To summarize, objects float because they displace water by the downward force of gravity, but there is also an upward force of buoyancy acting against the downward weight.
Air resistance is a type of friction which opposes motion in air.
A measure of the force of gravity on an object. Weight is a force. So, the units are newtons (N). Weight changes if force of gravity changes. For example, your weight is zero in space because there is no gravity in space.
A magnet is a piece of iron, nickel, metal, or cobalt with aligned domains. Magnets have poles, and N near S attract (attraction) , which are unlike poles. N near N repel (repulsion), and S near S repel (repulsion), which are like poles. Earth acts like a giant magnet. This is because of magnetic fields which are created in the core. The magnetic fields of Earth are huge, and extend a great distance into space.
A measure of the amount of matter in an object. Mass is not a force. Mass is measured in grams (g). Mass never changes. Your mass on Earth is the same as in space!
Ways to reduce friction are lubricants (a substance which reduces friction when applied to an object) such as oil and grease, polish or wax which reduces surface roughness, ball bearings such as skateboard wheels, and streamlining such as fast vehicles and fast-swimming marine animals, which reduce fluid friction since the shape is changed so air or water resistance is reduced.
Iron, nickel, metal, or cobalt.
How do you calculate speed?
S =d/t (speed equals distance over time)
Friction is a force that acts in a direction opposite to a moving object. It causes moving objects to slow down and/or stop, and occurs because surfaces are never perfectly smooth. Examples of why it is useful are that it prevents slipping, allows vehicles to brake, slows moving objects (sometimes useful), reduces falling speed (sometimes useful), builds a fire, and writes notes. Examples of why it is harmful are accidental fires, falling/crashing, car engines/factory machines can overheat or break, and erosion and weathering (sometimes dangerous).
The effects of a balanced force cancel each other, and they do not cause a change in the object's motion. If the forces on an object are balanced, the force is zero. The effect of an unbalanced force (an individual force that is not being balanced by a force of equal magnitude and in the opposite direction) causes a change in the object’s motion.
Sir Isaac Newton.
Motion is a change of position in a certain amount of time.
A force is a push or a pull, or a twist. Forces give energy to an object, causing it to change its position. Examples are: friction, gravity, magnetism, buoyancy, and air resistance.
Gravity is a force of attraction between all objects in the universe. All objects are affected equally by this, and all objects fall to the earth at 10 m/s doubled.
Buoyancy is the tendency or the ability to float or sink in water or in any kind of other fluid. Heavy objects can float because of density. Density is the amount of matter (mass) within a space (volume). The density of water is 1g/cm3. Therefore, objects less than this float in water, while objects more than this sink in water. Density can be calculated by D = m/V, or that density equals mass over volume. To summarize, objects float because they displace water by the downward force of gravity, but there is also an upward force of buoyancy acting against the downward weight.
Air resistance is a type of friction which opposes motion in air.
A measure of the force of gravity on an object. Weight is a force. So, the units are newtons (N). Weight changes if force of gravity changes. For example, your weight is zero in space because there is no gravity in space.
A magnet is a piece of iron, nickel, metal, or cobalt with aligned domains. Magnets have poles, and N near S attract (attraction) , which are unlike poles. N near N repel (repulsion), and S near S repel (repulsion), which are like poles. Earth acts like a giant magnet. This is because of magnetic fields which are created in the core. The magnetic fields of Earth are huge, and extend a great distance into space.
A measure of the amount of matter in an object. Mass is not a force. Mass is measured in grams (g). Mass never changes. Your mass on Earth is the same as in space!
Ways to reduce friction are lubricants (a substance which reduces friction when applied to an object) such as oil and grease, polish or wax which reduces surface roughness, ball bearings such as skateboard wheels, and streamlining such as fast vehicles and fast-swimming marine animals, which reduce fluid friction since the shape is changed so air or water resistance is reduced.
Iron, nickel, metal, or cobalt.
Describe the effect of balanced and unbalanced forces.
S =d/t (speed equals distance over time)
Friction is a force that acts in a direction opposite to a moving object. It causes moving objects to slow down and/or stop, and occurs because surfaces are never perfectly smooth. Examples of why it is useful are that it prevents slipping, allows vehicles to brake, slows moving objects (sometimes useful), reduces falling speed (sometimes useful), builds a fire, and writes notes. Examples of why it is harmful are accidental fires, falling/crashing, car engines/factory machines can overheat or break, and erosion and weathering (sometimes dangerous).
The effects of a balanced force cancel each other, and they do not cause a change in the object's motion. If the forces on an object are balanced, the force is zero. The effect of an unbalanced force (an individual force that is not being balanced by a force of equal magnitude and in the opposite direction) causes a change in the object’s motion.
Sir Isaac Newton.
Motion is a change of position in a certain amount of time.
A force is a push or a pull, or a twist. Forces give energy to an object, causing it to change its position. Examples are: friction, gravity, magnetism, buoyancy, and air resistance.
Gravity is a force of attraction between all objects in the universe. All objects are affected equally by this, and all objects fall to the earth at 10 m/s doubled.
Buoyancy is the tendency or the ability to float or sink in water or in any kind of other fluid. Heavy objects can float because of density. Density is the amount of matter (mass) within a space (volume). The density of water is 1g/cm3. Therefore, objects less than this float in water, while objects more than this sink in water. Density can be calculated by D = m/V, or that density equals mass over volume. To summarize, objects float because they displace water by the downward force of gravity, but there is also an upward force of buoyancy acting against the downward weight.
Air resistance is a type of friction which opposes motion in air.
A measure of the force of gravity on an object. Weight is a force. So, the units are newtons (N). Weight changes if force of gravity changes. For example, your weight is zero in space because there is no gravity in space.
A magnet is a piece of iron, nickel, metal, or cobalt with aligned domains. Magnets have poles, and N near S attract (attraction) , which are unlike poles. N near N repel (repulsion), and S near S repel (repulsion), which are like poles. Earth acts like a giant magnet. This is because of magnetic fields which are created in the core. The magnetic fields of Earth are huge, and extend a great distance into space.
A measure of the amount of matter in an object. Mass is not a force. Mass is measured in grams (g). Mass never changes. Your mass on Earth is the same as in space!
Ways to reduce friction are lubricants (a substance which reduces friction when applied to an object) such as oil and grease, polish or wax which reduces surface roughness, ball bearings such as skateboard wheels, and streamlining such as fast vehicles and fast-swimming marine animals, which reduce fluid friction since the shape is changed so air or water resistance is reduced.
Iron, nickel, metal, or cobalt.
Define friction and give examples of where it is useful and where it is harmful.
S =d/t (speed equals distance over time)
Friction is a force that acts in a direction opposite to a moving object. It causes moving objects to slow down and/or stop, and occurs because surfaces are never perfectly smooth. Examples of why it is useful are that it prevents slipping, allows vehicles to brake, slows moving objects (sometimes useful), reduces falling speed (sometimes useful), builds a fire, and writes notes. Examples of why it is harmful are accidental fires, falling/crashing, car engines/factory machines can overheat or break, and erosion and weathering (sometimes dangerous).
The effects of a balanced force cancel each other, and they do not cause a change in the object's motion. If the forces on an object are balanced, the force is zero. The effect of an unbalanced force (an individual force that is not being balanced by a force of equal magnitude and in the opposite direction) causes a change in the object’s motion.
Sir Isaac Newton.
Motion is a change of position in a certain amount of time.
A force is a push or a pull, or a twist. Forces give energy to an object, causing it to change its position. Examples are: friction, gravity, magnetism, buoyancy, and air resistance.
Gravity is a force of attraction between all objects in the universe. All objects are affected equally by this, and all objects fall to the earth at 10 m/s doubled.
Buoyancy is the tendency or the ability to float or sink in water or in any kind of other fluid. Heavy objects can float because of density. Density is the amount of matter (mass) within a space (volume). The density of water is 1g/cm3. Therefore, objects less than this float in water, while objects more than this sink in water. Density can be calculated by D = m/V, or that density equals mass over volume. To summarize, objects float because they displace water by the downward force of gravity, but there is also an upward force of buoyancy acting against the downward weight.
Air resistance is a type of friction which opposes motion in air.
A measure of the force of gravity on an object. Weight is a force. So, the units are newtons (N). Weight changes if force of gravity changes. For example, your weight is zero in space because there is no gravity in space.
A magnet is a piece of iron, nickel, metal, or cobalt with aligned domains. Magnets have poles, and N near S attract (attraction) , which are unlike poles. N near N repel (repulsion), and S near S repel (repulsion), which are like poles. Earth acts like a giant magnet. This is because of magnetic fields which are created in the core. The magnetic fields of Earth are huge, and extend a great distance into space.
A measure of the amount of matter in an object. Mass is not a force. Mass is measured in grams (g). Mass never changes. Your mass on Earth is the same as in space!
Ways to reduce friction are lubricants (a substance which reduces friction when applied to an object) such as oil and grease, polish or wax which reduces surface roughness, ball bearings such as skateboard wheels, and streamlining such as fast vehicles and fast-swimming marine animals, which reduce fluid friction since the shape is changed so air or water resistance is reduced.
Iron, nickel, metal, or cobalt.
List ways to reduce friction.
S =d/t (speed equals distance over time)
Friction is a force that acts in a direction opposite to a moving object. It causes moving objects to slow down and/or stop, and occurs because surfaces are never perfectly smooth. Examples of why it is useful are that it prevents slipping, allows vehicles to brake, slows moving objects (sometimes useful), reduces falling speed (sometimes useful), builds a fire, and writes notes. Examples of why it is harmful are accidental fires, falling/crashing, car engines/factory machines can overheat or break, and erosion and weathering (sometimes dangerous).
The effects of a balanced force cancel each other, and they do not cause a change in the object's motion. If the forces on an object are balanced, the force is zero. The effect of an unbalanced force (an individual force that is not being balanced by a force of equal magnitude and in the opposite direction) causes a change in the object’s motion.
Sir Isaac Newton.
Motion is a change of position in a certain amount of time.
A force is a push or a pull, or a twist. Forces give energy to an object, causing it to change its position. Examples are: friction, gravity, magnetism, buoyancy, and air resistance.
Gravity is a force of attraction between all objects in the universe. All objects are affected equally by this, and all objects fall to the earth at 10 m/s doubled.
Buoyancy is the tendency or the ability to float or sink in water or in any kind of other fluid. Heavy objects can float because of density. Density is the amount of matter (mass) within a space (volume). The density of water is 1g/cm3. Therefore, objects less than this float in water, while objects more than this sink in water. Density can be calculated by D = m/V, or that density equals mass over volume. To summarize, objects float because they displace water by the downward force of gravity, but there is also an upward force of buoyancy acting against the downward weight.
Air resistance is a type of friction which opposes motion in air.
A measure of the force of gravity on an object. Weight is a force. So, the units are newtons (N). Weight changes if force of gravity changes. For example, your weight is zero in space because there is no gravity in space.
A magnet is a piece of iron, nickel, metal, or cobalt with aligned domains. Magnets have poles, and N near S attract (attraction) , which are unlike poles. N near N repel (repulsion), and S near S repel (repulsion), which are like poles. Earth acts like a giant magnet. This is because of magnetic fields which are created in the core. The magnetic fields of Earth are huge, and extend a great distance into space.
A measure of the amount of matter in an object. Mass is not a force. Mass is measured in grams (g). Mass never changes. Your mass on Earth is the same as in space!
Ways to reduce friction are lubricants (a substance which reduces friction when applied to an object) such as oil and grease, polish or wax which reduces surface roughness, ball bearings such as skateboard wheels, and streamlining such as fast vehicles and fast-swimming marine animals, which reduce fluid friction since the shape is changed so air or water resistance is reduced.
Iron, nickel, metal, or cobalt.
Define air resistance and how it is a friction.
S =d/t (speed equals distance over time)
Friction is a force that acts in a direction opposite to a moving object. It causes moving objects to slow down and/or stop, and occurs because surfaces are never perfectly smooth. Examples of why it is useful are that it prevents slipping, allows vehicles to brake, slows moving objects (sometimes useful), reduces falling speed (sometimes useful), builds a fire, and writes notes. Examples of why it is harmful are accidental fires, falling/crashing, car engines/factory machines can overheat or break, and erosion and weathering (sometimes dangerous).
The effects of a balanced force cancel each other, and they do not cause a change in the object's motion. If the forces on an object are balanced, the force is zero. The effect of an unbalanced force (an individual force that is not being balanced by a force of equal magnitude and in the opposite direction) causes a change in the object’s motion.
Sir Isaac Newton.
Motion is a change of position in a certain amount of time.
A force is a push or a pull, or a twist. Forces give energy to an object, causing it to change its position. Examples are: friction, gravity, magnetism, buoyancy, and air resistance.
Gravity is a force of attraction between all objects in the universe. All objects are affected equally by this, and all objects fall to the earth at 10 m/s doubled.
Buoyancy is the tendency or the ability to float or sink in water or in any kind of other fluid. Heavy objects can float because of density. Density is the amount of matter (mass) within a space (volume). The density of water is 1g/cm3. Therefore, objects less than this float in water, while objects more than this sink in water. Density can be calculated by D = m/V, or that density equals mass over volume. To summarize, objects float because they displace water by the downward force of gravity, but there is also an upward force of buoyancy acting against the downward weight.
Air resistance is a type of friction which opposes motion in air.
A measure of the force of gravity on an object. Weight is a force. So, the units are newtons (N). Weight changes if force of gravity changes. For example, your weight is zero in space because there is no gravity in space.
A magnet is a piece of iron, nickel, metal, or cobalt with aligned domains. Magnets have poles, and N near S attract (attraction) , which are unlike poles. N near N repel (repulsion), and S near S repel (repulsion), which are like poles. Earth acts like a giant magnet. This is because of magnetic fields which are created in the core. The magnetic fields of Earth are huge, and extend a great distance into space.
A measure of the amount of matter in an object. Mass is not a force. Mass is measured in grams (g). Mass never changes. Your mass on Earth is the same as in space!
Ways to reduce friction are lubricants (a substance which reduces friction when applied to an object) such as oil and grease, polish or wax which reduces surface roughness, ball bearings such as skateboard wheels, and streamlining such as fast vehicles and fast-swimming marine animals, which reduce fluid friction since the shape is changed so air or water resistance is reduced.
Iron, nickel, metal, or cobalt.
Give a simple definition of gravity.
S =d/t (speed equals distance over time)
Friction is a force that acts in a direction opposite to a moving object. It causes moving objects to slow down and/or stop, and occurs because surfaces are never perfectly smooth. Examples of why it is useful are that it prevents slipping, allows vehicles to brake, slows moving objects (sometimes useful), reduces falling speed (sometimes useful), builds a fire, and writes notes. Examples of why it is harmful are accidental fires, falling/crashing, car engines/factory machines can overheat or break, and erosion and weathering (sometimes dangerous).
The effects of a balanced force cancel each other, and they do not cause a change in the object's motion. If the forces on an object are balanced, the force is zero. The effect of an unbalanced force (an individual force that is not being balanced by a force of equal magnitude and in the opposite direction) causes a change in the object’s motion.
Sir Isaac Newton.
Motion is a change of position in a certain amount of time.
A force is a push or a pull, or a twist. Forces give energy to an object, causing it to change its position. Examples are: friction, gravity, magnetism, buoyancy, and air resistance.
Gravity is a force of attraction between all objects in the universe. All objects are affected equally by this, and all objects fall to the earth at 10 m/s doubled.
Buoyancy is the tendency or the ability to float or sink in water or in any kind of other fluid. Heavy objects can float because of density. Density is the amount of matter (mass) within a space (volume). The density of water is 1g/cm3. Therefore, objects less than this float in water, while objects more than this sink in water. Density can be calculated by D = m/V, or that density equals mass over volume. To summarize, objects float because they displace water by the downward force of gravity, but there is also an upward force of buoyancy acting against the downward weight.
Air resistance is a type of friction which opposes motion in air.
A measure of the force of gravity on an object. Weight is a force. So, the units are newtons (N). Weight changes if force of gravity changes. For example, your weight is zero in space because there is no gravity in space.
A magnet is a piece of iron, nickel, metal, or cobalt with aligned domains. Magnets have poles, and N near S attract (attraction) , which are unlike poles. N near N repel (repulsion), and S near S repel (repulsion), which are like poles. Earth acts like a giant magnet. This is because of magnetic fields which are created in the core. The magnetic fields of Earth are huge, and extend a great distance into space.
A measure of the amount of matter in an object. Mass is not a force. Mass is measured in grams (g). Mass never changes. Your mass on Earth is the same as in space!
Ways to reduce friction are lubricants (a substance which reduces friction when applied to an object) such as oil and grease, polish or wax which reduces surface roughness, ball bearings such as skateboard wheels, and streamlining such as fast vehicles and fast-swimming marine animals, which reduce fluid friction since the shape is changed so air or water resistance is reduced.
Iron, nickel, metal, or cobalt.
Understand the force of buoyancy and explain why some heavy objects can float.
S =d/t (speed equals distance over time)
Friction is a force that acts in a direction opposite to a moving object. It causes moving objects to slow down and/or stop, and occurs because surfaces are never perfectly smooth. Examples of why it is useful are that it prevents slipping, allows vehicles to brake, slows moving objects (sometimes useful), reduces falling speed (sometimes useful), builds a fire, and writes notes. Examples of why it is harmful are accidental fires, falling/crashing, car engines/factory machines can overheat or break, and erosion and weathering (sometimes dangerous).
The effects of a balanced force cancel each other, and they do not cause a change in the object's motion. If the forces on an object are balanced, the force is zero. The effect of an unbalanced force (an individual force that is not being balanced by a force of equal magnitude and in the opposite direction) causes a change in the object’s motion.
Sir Isaac Newton.
Motion is a change of position in a certain amount of time.
A force is a push or a pull, or a twist. Forces give energy to an object, causing it to change its position. Examples are: friction, gravity, magnetism, buoyancy, and air resistance.
Gravity is a force of attraction between all objects in the universe. All objects are affected equally by this, and all objects fall to the earth at 10 m/s doubled.
Buoyancy is the tendency or the ability to float or sink in water or in any kind of other fluid. Heavy objects can float because of density. Density is the amount of matter (mass) within a space (volume). The density of water is 1g/cm3. Therefore, objects less than this float in water, while objects more than this sink in water. Density can be calculated by D = m/V, or that density equals mass over volume. To summarize, objects float because they displace water by the downward force of gravity, but there is also an upward force of buoyancy acting against the downward weight.
Air resistance is a type of friction which opposes motion in air.
A measure of the force of gravity on an object. Weight is a force. So, the units are newtons (N). Weight changes if force of gravity changes. For example, your weight is zero in space because there is no gravity in space.
A magnet is a piece of iron, nickel, metal, or cobalt with aligned domains. Magnets have poles, and N near S attract (attraction) , which are unlike poles. N near N repel (repulsion), and S near S repel (repulsion), which are like poles. Earth acts like a giant magnet. This is because of magnetic fields which are created in the core. The magnetic fields of Earth are huge, and extend a great distance into space.
A measure of the amount of matter in an object. Mass is not a force. Mass is measured in grams (g). Mass never changes. Your mass on Earth is the same as in space!
Ways to reduce friction are lubricants (a substance which reduces friction when applied to an object) such as oil and grease, polish or wax which reduces surface roughness, ball bearings such as skateboard wheels, and streamlining such as fast vehicles and fast-swimming marine animals, which reduce fluid friction since the shape is changed so air or water resistance is reduced.
Iron, nickel, metal, or cobalt.
Investigate the forces between two magnets.
S =d/t (speed equals distance over time)
Friction is a force that acts in a direction opposite to a moving object. It causes moving objects to slow down and/or stop, and occurs because surfaces are never perfectly smooth. Examples of why it is useful are that it prevents slipping, allows vehicles to brake, slows moving objects (sometimes useful), reduces falling speed (sometimes useful), builds a fire, and writes notes. Examples of why it is harmful are accidental fires, falling/crashing, car engines/factory machines can overheat or break, and erosion and weathering (sometimes dangerous).
The effects of a balanced force cancel each other, and they do not cause a change in the object's motion. If the forces on an object are balanced, the force is zero. The effect of an unbalanced force (an individual force that is not being balanced by a force of equal magnitude and in the opposite direction) causes a change in the object’s motion.
Sir Isaac Newton.
Motion is a change of position in a certain amount of time.
A force is a push or a pull, or a twist. Forces give energy to an object, causing it to change its position. Examples are: friction, gravity, magnetism, buoyancy, and air resistance.
Gravity is a force of attraction between all objects in the universe. All objects are affected equally by this, and all objects fall to the earth at 10 m/s doubled.
Buoyancy is the tendency or the ability to float or sink in water or in any kind of other fluid. Heavy objects can float because of density. Density is the amount of matter (mass) within a space (volume). The density of water is 1g/cm3. Therefore, objects less than this float in water, while objects more than this sink in water. Density can be calculated by D = m/V, or that density equals mass over volume. To summarize, objects float because they displace water by the downward force of gravity, but there is also an upward force of buoyancy acting against the downward weight.
Air resistance is a type of friction which opposes motion in air.
A measure of the force of gravity on an object. Weight is a force. So, the units are newtons (N). Weight changes if force of gravity changes. For example, your weight is zero in space because there is no gravity in space.
A magnet is a piece of iron, nickel, metal, or cobalt with aligned domains. Magnets have poles, and N near S attract (attraction) , which are unlike poles. N near N repel (repulsion), and S near S repel (repulsion), which are like poles. Earth acts like a giant magnet. This is because of magnetic fields which are created in the core. The magnetic fields of Earth are huge, and extend a great distance into space.
A measure of the amount of matter in an object. Mass is not a force. Mass is measured in grams (g). Mass never changes. Your mass on Earth is the same as in space!
Ways to reduce friction are lubricants (a substance which reduces friction when applied to an object) such as oil and grease, polish or wax which reduces surface roughness, ball bearings such as skateboard wheels, and streamlining such as fast vehicles and fast-swimming marine animals, which reduce fluid friction since the shape is changed so air or water resistance is reduced.
Iron, nickel, metal, or cobalt.
List the materials attracted by magnetic forces.
S =d/t (speed equals distance over time)
Friction is a force that acts in a direction opposite to a moving object. It causes moving objects to slow down and/or stop, and occurs because surfaces are never perfectly smooth. Examples of why it is useful are that it prevents slipping, allows vehicles to brake, slows moving objects (sometimes useful), reduces falling speed (sometimes useful), builds a fire, and writes notes. Examples of why it is harmful are accidental fires, falling/crashing, car engines/factory machines can overheat or break, and erosion and weathering (sometimes dangerous).
The effects of a balanced force cancel each other, and they do not cause a change in the object's motion. If the forces on an object are balanced, the force is zero. The effect of an unbalanced force (an individual force that is not being balanced by a force of equal magnitude and in the opposite direction) causes a change in the object’s motion.
Sir Isaac Newton.
Motion is a change of position in a certain amount of time.
A force is a push or a pull, or a twist. Forces give energy to an object, causing it to change its position. Examples are: friction, gravity, magnetism, buoyancy, and air resistance.
Gravity is a force of attraction between all objects in the universe. All objects are affected equally by this, and all objects fall to the earth at 10 m/s doubled.
Buoyancy is the tendency or the ability to float or sink in water or in any kind of other fluid. Heavy objects can float because of density. Density is the amount of matter (mass) within a space (volume). The density of water is 1g/cm3. Therefore, objects less than this float in water, while objects more than this sink in water. Density can be calculated by D = m/V, or that density equals mass over volume. To summarize, objects float because they displace water by the downward force of gravity, but there is also an upward force of buoyancy acting against the downward weight.
Air resistance is a type of friction which opposes motion in air.
A measure of the force of gravity on an object. Weight is a force. So, the units are newtons (N). Weight changes if force of gravity changes. For example, your weight is zero in space because there is no gravity in space.
A magnet is a piece of iron, nickel, metal, or cobalt with aligned domains. Magnets have poles, and N near S attract (attraction) , which are unlike poles. N near N repel (repulsion), and S near S repel (repulsion), which are like poles. Earth acts like a giant magnet. This is because of magnetic fields which are created in the core. The magnetic fields of Earth are huge, and extend a great distance into space.
A measure of the amount of matter in an object. Mass is not a force. Mass is measured in grams (g). Mass never changes. Your mass on Earth is the same as in space!
Ways to reduce friction are lubricants (a substance which reduces friction when applied to an object) such as oil and grease, polish or wax which reduces surface roughness, ball bearings such as skateboard wheels, and streamlining such as fast vehicles and fast-swimming marine animals, which reduce fluid friction since the shape is changed so air or water resistance is reduced.
Iron, nickel, metal, or cobalt.
Define weight.
S =d/t (speed equals distance over time)
Friction is a force that acts in a direction opposite to a moving object. It causes moving objects to slow down and/or stop, and occurs because surfaces are never perfectly smooth. Examples of why it is useful are that it prevents slipping, allows vehicles to brake, slows moving objects (sometimes useful), reduces falling speed (sometimes useful), builds a fire, and writes notes. Examples of why it is harmful are accidental fires, falling/crashing, car engines/factory machines can overheat or break, and erosion and weathering (sometimes dangerous).
The effects of a balanced force cancel each other, and they do not cause a change in the object's motion. If the forces on an object are balanced, the force is zero. The effect of an unbalanced force (an individual force that is not being balanced by a force of equal magnitude and in the opposite direction) causes a change in the object’s motion.
Sir Isaac Newton.
Motion is a change of position in a certain amount of time.
A force is a push or a pull, or a twist. Forces give energy to an object, causing it to change its position. Examples are: friction, gravity, magnetism, buoyancy, and air resistance.
Gravity is a force of attraction between all objects in the universe. All objects are affected equally by this, and all objects fall to the earth at 10 m/s doubled.
Buoyancy is the tendency or the ability to float or sink in water or in any kind of other fluid. Heavy objects can float because of density. Density is the amount of matter (mass) within a space (volume). The density of water is 1g/cm3. Therefore, objects less than this float in water, while objects more than this sink in water. Density can be calculated by D = m/V, or that density equals mass over volume. To summarize, objects float because they displace water by the downward force of gravity, but there is also an upward force of buoyancy acting against the downward weight.
Air resistance is a type of friction which opposes motion in air.
A measure of the force of gravity on an object. Weight is a force. So, the units are newtons (N). Weight changes if force of gravity changes. For example, your weight is zero in space because there is no gravity in space.
A magnet is a piece of iron, nickel, metal, or cobalt with aligned domains. Magnets have poles, and N near S attract (attraction) , which are unlike poles. N near N repel (repulsion), and S near S repel (repulsion), which are like poles. Earth acts like a giant magnet. This is because of magnetic fields which are created in the core. The magnetic fields of Earth are huge, and extend a great distance into space.
A measure of the amount of matter in an object. Mass is not a force. Mass is measured in grams (g). Mass never changes. Your mass on Earth is the same as in space!
Ways to reduce friction are lubricants (a substance which reduces friction when applied to an object) such as oil and grease, polish or wax which reduces surface roughness, ball bearings such as skateboard wheels, and streamlining such as fast vehicles and fast-swimming marine animals, which reduce fluid friction since the shape is changed so air or water resistance is reduced.
Iron, nickel, metal, or cobalt.
Define mass.
S =d/t (speed equals distance over time)
Friction is a force that acts in a direction opposite to a moving object. It causes moving objects to slow down and/or stop, and occurs because surfaces are never perfectly smooth. Examples of why it is useful are that it prevents slipping, allows vehicles to brake, slows moving objects (sometimes useful), reduces falling speed (sometimes useful), builds a fire, and writes notes. Examples of why it is harmful are accidental fires, falling/crashing, car engines/factory machines can overheat or break, and erosion and weathering (sometimes dangerous).
The effects of a balanced force cancel each other, and they do not cause a change in the object's motion. If the forces on an object are balanced, the force is zero. The effect of an unbalanced force (an individual force that is not being balanced by a force of equal magnitude and in the opposite direction) causes a change in the object’s motion.
Sir Isaac Newton.
Motion is a change of position in a certain amount of time.
A force is a push or a pull, or a twist. Forces give energy to an object, causing it to change its position. Examples are: friction, gravity, magnetism, buoyancy, and air resistance.
Gravity is a force of attraction between all objects in the universe. All objects are affected equally by this, and all objects fall to the earth at 10 m/s doubled.
Buoyancy is the tendency or the ability to float or sink in water or in any kind of other fluid. Heavy objects can float because of density. Density is the amount of matter (mass) within a space (volume). The density of water is 1g/cm3. Therefore, objects less than this float in water, while objects more than this sink in water. Density can be calculated by D = m/V, or that density equals mass over volume. To summarize, objects float because they displace water by the downward force of gravity, but there is also an upward force of buoyancy acting against the downward weight.
Air resistance is a type of friction which opposes motion in air.
A measure of the force of gravity on an object. Weight is a force. So, the units are newtons (N). Weight changes if force of gravity changes. For example, your weight is zero in space because there is no gravity in space.
A magnet is a piece of iron, nickel, metal, or cobalt with aligned domains. Magnets have poles, and N near S attract (attraction) , which are unlike poles. N near N repel (repulsion), and S near S repel (repulsion), which are like poles. Earth acts like a giant magnet. This is because of magnetic fields which are created in the core. The magnetic fields of Earth are huge, and extend a great distance into space.
A measure of the amount of matter in an object. Mass is not a force. Mass is measured in grams (g). Mass never changes. Your mass on Earth is the same as in space!
Ways to reduce friction are lubricants (a substance which reduces friction when applied to an object) such as oil and grease, polish or wax which reduces surface roughness, ball bearings such as skateboard wheels, and streamlining such as fast vehicles and fast-swimming marine animals, which reduce fluid friction since the shape is changed so air or water resistance is reduced.
Iron, nickel, metal, or cobalt.
Who discovered these two facts?
S =d/t (speed equals distance over time)
Friction is a force that acts in a direction opposite to a moving object. It causes moving objects to slow down and/or stop, and occurs because surfaces are never perfectly smooth. Examples of why it is useful are that it prevents slipping, allows vehicles to brake, slows moving objects (sometimes useful), reduces falling speed (sometimes useful), builds a fire, and writes notes. Examples of why it is harmful are accidental fires, falling/crashing, car engines/factory machines can overheat or break, and erosion and weathering (sometimes dangerous).
The effects of a balanced force cancel each other, and they do not cause a change in the object's motion. If the forces on an object are balanced, the force is zero. The effect of an unbalanced force (an individual force that is not being balanced by a force of equal magnitude and in the opposite direction) causes a change in the object’s motion.
Sir Isaac Newton.
Motion is a change of position in a certain amount of time.
A force is a push or a pull, or a twist. Forces give energy to an object, causing it to change its position. Examples are: friction, gravity, magnetism, buoyancy, and air resistance.
Gravity is a force of attraction between all objects in the universe. All objects are affected equally by this, and all objects fall to the earth at 10 m/s doubled.
Buoyancy is the tendency or the ability to float or sink in water or in any kind of other fluid. Heavy objects can float because of density. Density is the amount of matter (mass) within a space (volume). The density of water is 1g/cm3. Therefore, objects less than this float in water, while objects more than this sink in water. Density can be calculated by D = m/V, or that density equals mass over volume. To summarize, objects float because they displace water by the downward force of gravity, but there is also an upward force of buoyancy acting against the downward weight.
Air resistance is a type of friction which opposes motion in air.
A measure of the force of gravity on an object. Weight is a force. So, the units are newtons (N). Weight changes if force of gravity changes. For example, your weight is zero in space because there is no gravity in space.
A magnet is a piece of iron, nickel, metal, or cobalt with aligned domains. Magnets have poles, and N near S attract (attraction) , which are unlike poles. N near N repel (repulsion), and S near S repel (repulsion), which are like poles. Earth acts like a giant magnet. This is because of magnetic fields which are created in the core. The magnetic fields of Earth are huge, and extend a great distance into space.
A measure of the amount of matter in an object. Mass is not a force. Mass is measured in grams (g). Mass never changes. Your mass on Earth is the same as in space!
Ways to reduce friction are lubricants (a substance which reduces friction when applied to an object) such as oil and grease, polish or wax which reduces surface roughness, ball bearings such as skateboard wheels, and streamlining such as fast vehicles and fast-swimming marine animals, which reduce fluid friction since the shape is changed so air or water resistance is reduced.
Iron, nickel, metal, or cobalt.
S =d/t (speed equals distance over time)
Friction is a force that acts in a direction opposite to a moving object. It causes moving objects to slow down and/or stop, and occurs because surfaces are never perfectly smooth. Examples of why it is useful are that it prevents slipping, allows vehicles to brake, slows moving objects (sometimes useful), reduces falling speed (sometimes useful), builds a fire, and writes notes. Examples of why it is harmful are accidental fires, falling/crashing, car engines/factory machines can overheat or break, and erosion and weathering (sometimes dangerous).
The effects of a balanced force cancel each other, and they do not cause a change in the object's motion. If the forces on an object are balanced, the force is zero. The effect of an unbalanced force (an individual force that is not being balanced by a force of equal magnitude and in the opposite direction) causes a change in the object’s motion.
Sir Isaac Newton.
Motion is a change of position in a certain amount of time.
A force is a push or a pull, or a twist. Forces give energy to an object, causing it to change its position. Examples are: friction, gravity, magnetism, buoyancy, and air resistance.
Gravity is a force of attraction between all objects in the universe. All objects are affected equally by this, and all objects fall to the earth at 10 m/s doubled.
Buoyancy is the tendency or the ability to float or sink in water or in any kind of other fluid. Heavy objects can float because of density. Density is the amount of matter (mass) within a space (volume). The density of water is 1g/cm3. Therefore, objects less than this float in water, while objects more than this sink in water. Density can be calculated by D = m/V, or that density equals mass over volume. To summarize, objects float because they displace water by the downward force of gravity, but there is also an upward force of buoyancy acting against the downward weight.
Air resistance is a type of friction which opposes motion in air.
A measure of the force of gravity on an object. Weight is a force. So, the units are newtons (N). Weight changes if force of gravity changes. For example, your weight is zero in space because there is no gravity in space.
A magnet is a piece of iron, nickel, metal, or cobalt with aligned domains. Magnets have poles, and N near S attract (attraction) , which are unlike poles. N near N repel (repulsion), and S near S repel (repulsion), which are like poles. Earth acts like a giant magnet. This is because of magnetic fields which are created in the core. The magnetic fields of Earth are huge, and extend a great distance into space.
A measure of the amount of matter in an object. Mass is not a force. Mass is measured in grams (g). Mass never changes. Your mass on Earth is the same as in space!
Ways to reduce friction are lubricants (a substance which reduces friction when applied to an object) such as oil and grease, polish or wax which reduces surface roughness, ball bearings such as skateboard wheels, and streamlining such as fast vehicles and fast-swimming marine animals, which reduce fluid friction since the shape is changed so air or water resistance is reduced.
Iron, nickel, metal, or cobalt.
S =d/t (speed equals distance over time)
Friction is a force that acts in a direction opposite to a moving object. It causes moving objects to slow down and/or stop, and occurs because surfaces are never perfectly smooth. Examples of why it is useful are that it prevents slipping, allows vehicles to brake, slows moving objects (sometimes useful), reduces falling speed (sometimes useful), builds a fire, and writes notes. Examples of why it is harmful are accidental fires, falling/crashing, car engines/factory machines can overheat or break, and erosion and weathering (sometimes dangerous).
The effects of a balanced force cancel each other, and they do not cause a change in the object's motion. If the forces on an object are balanced, the force is zero. The effect of an unbalanced force (an individual force that is not being balanced by a force of equal magnitude and in the opposite direction) causes a change in the object’s motion.
Sir Isaac Newton.
Motion is a change of position in a certain amount of time.
A force is a push or a pull, or a twist. Forces give energy to an object, causing it to change its position. Examples are: friction, gravity, magnetism, buoyancy, and air resistance.
Gravity is a force of attraction between all objects in the universe. All objects are affected equally by this, and all objects fall to the earth at 10 m/s doubled.
Buoyancy is the tendency or the ability to float or sink in water or in any kind of other fluid. Heavy objects can float because of density. Density is the amount of matter (mass) within a space (volume). The density of water is 1g/cm3. Therefore, objects less than this float in water, while objects more than this sink in water. Density can be calculated by D = m/V, or that density equals mass over volume. To summarize, objects float because they displace water by the downward force of gravity, but there is also an upward force of buoyancy acting against the downward weight.
Air resistance is a type of friction which opposes motion in air.
A measure of the force of gravity on an object. Weight is a force. So, the units are newtons (N). Weight changes if force of gravity changes. For example, your weight is zero in space because there is no gravity in space.
A magnet is a piece of iron, nickel, metal, or cobalt with aligned domains. Magnets have poles, and N near S attract (attraction) , which are unlike poles. N near N repel (repulsion), and S near S repel (repulsion), which are like poles. Earth acts like a giant magnet. This is because of magnetic fields which are created in the core. The magnetic fields of Earth are huge, and extend a great distance into space.
A measure of the amount of matter in an object. Mass is not a force. Mass is measured in grams (g). Mass never changes. Your mass on Earth is the same as in space!
Ways to reduce friction are lubricants (a substance which reduces friction when applied to an object) such as oil and grease, polish or wax which reduces surface roughness, ball bearings such as skateboard wheels, and streamlining such as fast vehicles and fast-swimming marine animals, which reduce fluid friction since the shape is changed so air or water resistance is reduced.
Iron, nickel, metal, or cobalt.
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