Physics Momentum Questions

Name: ________________________ Class: ___________________ Date: __________ ID: A

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Momentum Quiz

Multiple Choice

Identify the choice that best completes the statement or answers the question.

____ 1. Which of the following has the greatest momentum?

A) truck with a mass of 2250 kg moving at a velocity of 25 m/s

B) car with a mass of 1210 kg moving at a velocity of 51 m/s

C) truck with a mass of 6120 kg moving at a velocity of 10 m/s

D) car with a mass of 1540 kg moving at a velocity of 38 m/s

____ 2. Which of the following has the greatest momentum?

A) tortoise with a mass of 270 kg moving at a velocity of 0.5 m/s

B) hare with a mass of 2.7 kg moving at a velocity of 7 m/s

C) turtle with a mass of 91 kg moving at a velocity of 1.4 m/s

D) roadrunner

D) is zero throughout the ride.

Name: ________________________ ID: A

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____ 7. If a force is exerted on an object, which statement is true?

A) A large force always produces a large change in the object’s momentum.

B) A large force produces a large change in the object’s momentum only if the force is applied over a very short time interval.

C) A small force applied over a long time interval can produce a large change in the object’s momentum. D) A small force produces a large change in the object’s momentum.

____ 8. The change in an object’s momentum is equal to

A) the product of the mass of the object and the time interval.

B) the product of the force applied to the object and the time interval.

C) the time interval divided by the net external force.

D) the net external force divided by the time interval.

____ 9. A force is applied to stop a moving shopping cart. Increasing the time interval over which the force is applied

A) requires a greater force. C) requires a smaller force.

B) has no effect on the force needed. D) requires the same force.

____ 10. A 6.0 × 10–2 kg tennis ball moves at a velocity of 12 m/s. The ball is struck by a racket, causing it to

B) of the small ball decreases, and the momentum of the large ball increases.

C) of the large ball increases, and the momentum of the small ball decreases.

D) does not change for either ball.

____ 13. A rubber ball moving at a speed of 5 m/s hit a flat wall and returned to the thrower at 5 m/s. The magnitude of the momentum of the rubber ball

A) increased. C) remained the same.

B) decreased. D) was not conserved.

Name: ________________________ ID: A

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____ 14. Two objects with different masses collide and bounce back after an elastic collision. Before the collision, the two objects were moving at velocities equal in magnitude but opposite in direction. After the collision,

A) the less massive object had gained momentum.

B) the more massive object had gained momentum.

C) both objects had the same momentum.

D) both objects lost momentum.

____ 15. Two skaters stand facing each other. One skater’s mass is 60 kg, and the other’s mass is 72 kg. If the skaters push away from each other without spinning,

A) the 60 kg skater travels at a lower momentum.

B) their momenta are equal but opposite.

C) their total momentum doubles.

D) their total momentum