1. The Law of Conservation of Momentum
Collisions Post-Lab
The Law of Conservation of Momentum
In any closed, isolated system the total momentum remains constant
Since the graph is linear and contains (0,0)

2. Example 1
a. What is the final velocity of the boy?

3. Example 1
b. How far apart are they after 5.0 s?

4. Example 2
a. What is the final velocity of the bullet and the block after the collision?

5. This is known as a completely inelastic collision.
Example 2
b. What are the initial and final kinetic energies of the bullet, wood block system?
This is known as a completely inelastic collision.