1. Review Game Eurrrreeeekkkaaa! Get a board, marker, and a wipey thing... No partners today

2. A toy figure is situated on top of a spring and is squished into a box

3. The spring is compressed 0.5-m by a force of 2-N 1.What is the elongation (x) of the spring? 2.What is the elongation constant of the spring? 3.What is the PE of the compressed spring? 4.If m=3 kg, how high will it jump?

4. 5.First hand up... Explain what is happening.

5. 6. What will happen to the velocity of the big fish? The little fish?

6. 7. A 801-N car is traveling at 2.02 m/s. What is its momentum?

7. 8. If the momentum is 165.1-kgm/s and it hits another car... How much force was exerted (the at rest car took 0.1-sec to stop the other car)

8. 9. If the force needed to stop the car is 1651-N, what is the force on the 712-N driver applied by the seatbelt?

9. 9.The graph that is about to be on the overhead shows force vs. displacement. 9.What was the average work done in moving the block 3-m?

11. 10.A 30-N block is at rest at the bottom of a frictionless incline. How much work is done against gravity to move the block to the top of the incline?

13. 11.How much potential energy does the block have at the top of the hill?

15. 12. If the block has a mass of 10-kg, what will be it’s maximum velocity at the after it careens off the end of the cliff? (ignore the x-direction)

17. 13. Car A and Car B are of equal mass and travel up a hill. Car A moves up the hill at a constant speed that is twice the constant speed of car B. Compared to the power developed by car B, the power of A is what? 1.The Same 2.Twice as much 3.Four times as much 4.Half as much

19. 14. A 1 kg bird flying at 2 m/s is sucked straight into the engine of a 10,000 kg jumbo jet going 100 m/s. The bird sticks to the inside of the engine, which then bursts into flames. As the doomed plane begins its descent, what is its momentum?

20. Boom.

21. 15.At what point does the cat have the most KE?

22. 16.What are the fundamental units that make up a Joule? Kg m 2 /s 2

23. Kg m 2 /s 3 17. What are the fundamental units that make up a Watt?

24. 18. What is the spring constant of a spring that gains 6.0-J of PE as a result of being compressed 0.40-m? 75-N/m

25. The End work on your homework