5. In the next moment, the KE piece of the pie gets larger, then

1. 1. Do you think the Skater will make it over the first hump?Explain WHY!(No friction on the track)

2. 2. Do you think the Skater will make it over the first hump?Explain WHY!(lots oftrackfriction)

3. 3. Do you think the Skater will make it over the first hump?Explain WHY!(No friction on the track)

4. 4. Do you think the Skater will make it over the first hump?Explain WHY!(lots oftrackfriction)

5. 5. In the next moment, the KE piece of the pie gets larger, then • The Skater is going up hill (left) • The Skater is going down hill (right) • There is no way to tell

6. 6. In the next moment, the KE piece of the pie gets larger, then • The PE part stays the same • The PE part gets larger too • The PE part gets smaller • There is no way to tell

7. 7. In the next moment, the KE piece of the pie gets larger, then • The Skater will be going faster • The Skater will be going slower • There is no way to tell

8. A B C D E 1. The dotted line on the chart shows the energy of the Skater, where could she be on the track?

9. A B C D E 2. The bar graph shows the energy of the Skater, where could she be on the track?

10. A B C D E 3. The pie graph shows the energy of the Skater, where could she be on the track? KE PE

11. PE KE A. B. C. D. 1 3 4 2 4. If the ball is at point 4, which chart could represent the ball’s energy?

12. 1 3 4 2 5. If a heavier ball is at point 4, how would the energy change? KE • No changes • The total energy would be larger • The PE part would be larger • The KE part would be larger PE

13. At 4 Next step 1 3 4 2 6. As the ball rolls from point 4, the KE bar gets taller. Which way is the ball rolling? • Up (right) • Down (left) • not enough info

14. 7. The Energy chart of a boy skating looks like this How would you describe his speed? • He is at his maximum speed • He is stopped • He is going his average speed • He is going slow • He is going fast

15. 8. The Energy chart of a boy skating looks like this How would you describe his speed? • He is at his maximum speed • He is stopped • He is going his average speed • He is going slow • He is going fast

16. C B A 9. Select a letter for each: stopped, slow and fast

17. Energy vs Position 10. Sketch this energy position graph. Label where the 5 spots, A-E, could be PE KE • He is going his maximum speed • He is stopped • He is going his average speed • He is going slow • He is going fast

18. Roller Coaster Lab • What happens to Gravitational Potential Energy throughout the ride? • Where is EG the same? • What happens to Kinetic Energy throughout the ride? • Is EK the same at points of the same height? • What happens to Thermal Energy throughout the ride?

19. The table below lists the mass and speed of each of four objects. Which two objects have the same kinetic energy? a. A and D c. B and D b. A and C d. B and C

20. A pendulum is pulled to the side and released from rest. Which graph best represents the relationship between the gravitational potential energy of the pendulum and its displacement from its point of release?

21. The diagram below shows an ideal simple pendulum. • As the pendulum swings from position A to position B, what happens to its total mechanical energy? [Neglect friction.]

22. A 6.8-kilogram block is sliding down a horizontal, frictionless surface at a constant speed of 6.0 meters per second. The kinetic energy of the block is approximately