Understanding Check

True or False: It is possible for an object to be in motion when the net force acting on the object is zero.

True

False

True or False: If an object has a positive, non-zero net force it must be traveling in the positive direction.

True

False

Which set of conditions describe an object that is slowing down. Select all the apply.

Positive velocity, positive net force

Negative velocity, positive net force

Negative velocity, negative acceleration

Positive velocity, negative acceleration

Constant speed, negative velocity

A 20 N force pulls a 10 kg box across the floor at a constant velocity of 3.0 m/s. What is the coefficient of kinetic friction between the box and the floor?

-20 N

0.50

0.20

0.30

A 5 kg box is at rest on the ground. If the coefficient of static friction is 0.6, how much force would you need to apply to the box to get it to move?

5.0 N

4.4 N

49.0 N

29.4 N

A 200 g puck is given an initial velocity of 4 m/s. If the coefficient of kinetic friction between the puck and the ice is 0.05, how much time will it take for the puck to come to rest?

4.1 s

8.2 s

0.49 s

40.5 s

A 20 kg block is sitting stationary on a flat surface. What is the weight of the object?

196 kg

196 N

20 kg

20 N

A 2 kg stone is dropped from rest from a height of 3 m. Assuming there is no air resistance, how long will it take the stone to hit the ground?

0.78 s

0.55 s

0.30 s

0.20

A 70 kg figure skater pushes his 50 kg partner away from him with a force of 40 N. How fast will the 70 kg skate be accelerating as a result of the push?

0.80 m/s^2

-0.80 m/s^2

0.57 m/s^2

-0.57 m/s^2

A 500 kg sports car traveling at 25 mph has a head-on collision with 12,000 kg truck that is traveling at -15 m/s. Which vehicle experiences a greater force as a result of the collision?

Sports Car

Truck

They experience the same amount of force

{"name":"Understanding Check", "url":"https://www.quiz-maker.com/QBB83JN3A","txt":"True or False: It is possible for an object to be in motion when the net force acting on the object is zero., True or False: If an object has a positive, non-zero net force it must be traveling in the positive direction., Which set of conditions describe an object that is slowing down. Select all the apply.","img":"https://www.quiz-maker.com/3012/images/ogquiz.png"}

Quiz Maker