1. What is the definition of momentum?
- A. Mass times acceleration
- B. Mass times velocity
- C. Mass divided by volume
- D. Force times time
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Momentum Conservation Quiz
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What is the definition of momentum?
Momentum Conservation Quiz - Quiz Questions
Test your understanding of the Law of Conservation of Momentum.
2. What is the condition for conservation of momentum?
- A. The system is not subject to external forces or the net external force is zero
- B. The system is not subject to internal forces
- C. The system must be in a stationary state
- D. There are only elastic collisions within the system
3. Regarding the vector nature of momentum, which of the following statements is correct?
- A. Momentum has only magnitude, no direction
- B. The direction of momentum is always the same as the direction of acceleration
- C. The direction of momentum is always the same as the direction of velocity
- D. The direction of momentum is always the same as the direction of displacement
4. A small ball with a mass of $2kg$ hits another stationary small ball with a mass of $2kg$ at a speed of $4m/s$. If a perfectly inelastic collision occurs (sticking together), what is the common velocity after the collision?
- A. $2 m/s$
- B. $4 m/s$
- C. $8 m/s$
- D. $0 m/s$
5. What is the main difference between perfectly elastic collision and perfectly inelastic collision?
- A. In the former, momentum is conserved; in the latter, momentum is not conserved
- B. In the former, mechanical energy is conserved; in the latter, mechanical energy is not conserved
- C. In the latter, momentum is conserved; in the former, not conserved
- D. In both, momentum and mechanical energy are conserved
6. Why can a rocket accelerate in space?
- A. The rocket pushes against the air behind it
- B. The rocket pushes against the Earth
- C. The rocket ejects gas, using the recoil effect (conservation of momentum)
- D. Because there is no gravity in space
7. What is the physical principle behind the design of car airbags and crumple zones?
- A. Reduce the change in momentum of the person
- B. Increase the duration of the collision, thereby reducing the average impact force
- C. Increase the collision force
- D. Reduce the duration of the collision
8. What physical quantities need to be measured to verify the conservation of momentum in this experiment?
- A. The mass and diameter of the small balls
- B. The mass of the small balls and the velocities before and after the collision
- C. The color of the small balls and the sound of the collision
- D. The collision time and the change in force