1. December 12 Physics

2. In: A car (mass=500 kg) going 50 m/s north collides with a truck (mass=2000 kg) going 60 m/s south. Afterwards the car is going 20 m/s south. How fast is the truck going?

3. Objective: To prepare for and take a quiz. Success criteria: To be able to do problems with bouncing, sticking and recoil collisions.

4. An offensive player (mass=100 kg) running at 10 m/s to the north is hit by a defensive player (mass=180 kg) running at 5 m/s south. They hold onto each other and go at what velocity?

5. Boat #1 (mass 600 kg) going 20 m/s to the right is hit by boat #2 (mass 1100 kg) going 12 m/s to the left. Afterward boat #1 is going 5 m/s to the left. How fast is boat #2 moving?

6. A 3 kg bomb is ticking away when it suddenly explodes into 2 pieces. One piece is 1 kg and goes 50 m/s to the north. How fast does the other part go?

8. What is the most important idea about momentum?