Objectives
1. Define momentum.
7.2 Impulse Changes Momentum
2. Define impulse and relate it to momentum.
3. Give examples of how both the size of the force and the length of the time
interval affect the change in momentum.
7.3 Bouncing
4. Explain why impulses are greater when an object bounces than when the
same object simply comes to a complete stop.
7.4 Conservation of Momentum
5. State the law of conservation of momentum.
7.5 Collisions
6. Distinguish between an elastic collision and an inelastic collision.
7.6 Momentum Vectors
7. Give an example of how the vector nature of momentum affects the law of
conservation of momentum.
8. Solve conservation of momentum problems for both elastic and inelastic
collisions.
Misconceptions
Note: The following statements are all FALSE!!!
1. Impulse equals momentum.
2. Momentum is conserved only when collisions are perfectly elastic.
3. Impact and impulse are the same.