1. Warmup:
A rifle with a mass of 9.0 kg is used to fire a bullet of mass 0.4 kg. The bullet
leaves the gun with a speed of 125 m/s. What is the recoil velocity of the gun?

2. Physics Chapter 9 Test Information
The test is worth 42 points total.
Multiple Choice: 20 questions, 1 point each.
Problems: 3 questions for a total of 22 points.
Know:
- the formulas, and where to find them on your green sheet
- vocabulary from the chapter
- What is a closed system? What is an isolated system?
- the difference between impulse and momentum
- the impulse-momentum theorem
- the conditions for momentum to be conserved
- moment of inertia, precession, angular momentum
- the conditions for angular momentum to be conserved