Practice calculating momentum and analyzing collisions using mass, velocity, impulse, and conservation of momentum.
Read each problem carefully. Show your work and include units in every answer.
Using mass, velocity, and conservation of momentum
Physics - Grade 9-12
- 1
A 2 kg cart moves to the right at 5 m/s. What is its momentum?
- 2
A 1200 kg car is moving at 18 m/s east. Calculate its momentum.
- 3
A 0.50 kg soccer ball is kicked and moves at 16 m/s north. What is the ball's momentum?
- 4
A 1500 kg truck is initially at rest. After a force acts, it moves at 4 m/s west. What is its final momentum?
- 5
A 3 kg object changes velocity from 2 m/s east to 7 m/s east. Find the change in momentum.
- 6
A 4 kg object moves at 6 m/s right and then at 2 m/s right after a collision. What is the object's change in momentum?
- 7
A force of 12 N acts on an object for 0.50 s. What impulse does the object receive?
- 8
A 0.25 kg ball at rest is hit and leaves with a velocity of 20 m/s east. What impulse was delivered to the ball?
- 9
Two carts collide and stick together. Cart A has mass 2 kg and velocity 4 m/s right. Cart B has mass 3 kg and is at rest. What is their final velocity?
- 10
A 1.5 kg cart moving at 6 m/s east collides with a 1.0 kg cart moving at 2 m/s east. They stick together. Find their final velocity.
- 11
A 0.20 kg puck moves at 10 m/s east and collides with a 0.30 kg puck moving at 4 m/s west. They stick together. What is their final velocity?
- 12
A 900 kg car traveling 20 m/s east collides head-on with a 1100 kg car traveling 10 m/s west. If they stick together, what is their final velocity?
- 13
A 5 kg object has a momentum of 30 kg m/s north. What is its velocity?
- 14
A 0.40 kg ball changes velocity from 3 m/s south to 7 m/s north. Find the impulse on the ball.
- 15
In one or two complete sentences, explain the law of conservation of momentum for a closed system.