4. Momentum

Conservation Of Momentum — Quiz

Test your understanding of conservation of momentum with 5 practice questions.

Practice Questions

Question 1

A 2 kg object is moving at 5 m/s to the right and collides with a 3 kg object moving at 2 m/s to the left. If the collision is perfectly inelastic, what is the final velocity of the combined mass?

Question 2

A 4 kg object moving at 3 m/s collides with a 2 kg object moving at 1 m/s in the same direction. If the objects stick together after the collision, what is the final velocity of the combined mass?

Question 3

A 1.5 kg ball moving at 4 m/s to the right collides with a 2.5 kg ball moving at 1 m/s to the left. After the collision, the 1.5 kg ball moves at 1 m/s to the right. What is the velocity of the 2.5 kg ball after the collision (assuming an isolated system)?

Question 4

A 3 kg cart moving at 2 m/s collides elastically with a 4 kg cart moving at -3 m/s. After the collision, the 3 kg cart moves at -4 m/s. What is the velocity of the 4 kg cart after the collision?

Question 5

A 5 kg object moving at 7 m/s collides inelastically with a 3 kg object moving at -2 m/s. If the objects stick together, what is the final velocity of the combined mass?