A

Force
A push or pull.
Friction
The forces that two surfaces exert on each other
Static friction
The force that acts upon two unmoving object.
Fluid friction
Fluids such as water and air
Gravity
Force that pulls objects toward each other.
 
 
Newtons first law
An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force
Newtons second law
The acceleration and mass of an object.
Newtons third law
For every action, there is an equal and opposite reaction.
Momentum
The quantity of motion is measured by a product of its mass and velocity.
 Is the speed of an object
Accelration
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