1. Describe in your own words the law of conservation of momentum.

2. Describe conservation of momentum in terms of a rocket being fired.

3. One billiard ball striking another is an example of a(n) _____ collision.

4. One moving loaded railroad car striking and coupling with a parked empty railroad car and then both moving on down the track is an example of a(n) _____ collision.

5. A father and 8-year-old son are standing on ice skates in an ice arena. The father then pushes the son on the back to give him a quick start. What do we know about the momentum of each person?