Name:__________________________________ Class: _________ Date: _______ Unit 3: Energy Energy HW #1

Energy Homework: Energy Transformation & Kinetic versus Potential Energy

Use the diagram below to answer questions 1-6. The diagram shows the path of a ball as it is thrown into the air. A and G represent the ball’s position when it is in the hand of the thrower.

1) At which lettered positon does the ball have the greatest potential energy? _______ 2) Explain how you came up with your answer to question #1

_______________________________________________________________________________________________________

3) What happens to the kinetic energy as the ball moves from postiont C to D? _________________

4) Explain how you came up with your answer to question 3 ____________________________________________________________________________________________________________________________________

5) What happens to the potential energy as the ball moves from position E to F? __________

6) What force causes the ball to come back down? ________________________________

For each of the following diagrams state one energy transformation that is taking place.

The original form of energy is ____________________.

This energy turns into: ____________________________.

The original form of energy is ____________________.

This energy turns into: ____________________________.

The original form of energy is ____________________.

This energy turns into: ____________________________.

Part 2: This graph shows a ball rolling from A to G.

1. Which letter shows the ball when it has the maximum kinetic NRG ? ________2. Which letter shows the ball when it has the maximum potential NRG ? _______3. Which letter shows the ball when it has the least potential NRG? _______4. Which letter shows the ball when it has the least kinetic NRG? ________5. Which letter shows the ball when it has just a little more kinetic NRG than A? _____6. Which letter shows the ball when it has just a little more potential NRG than letter C? ______7. Which letter shows the ball when it has just a little less potential energy than letter F? ______8. Which letter shows the ball when it has just a little more kinetic energy than letter G? ______9. Which letter shows the ball when it has just a little less kinetic energy than letter D? ______10. Which letter shows the ball when it has just a little less potential energy than letter C? _____11. Which sequence correctly shows an increase in potential energy?A. E, F, B, G B. B, F, E, CC. D, E, B, F D. A, G, F, C

12. Which sequence correctly shows an increase in kinetic energy?A. E, F, B, G B. B, F, E, CC. D, E, B, F D. A, G, F, C

13. Which sequence correctly shows an decrease in kinetic energy?A. E, F, B, G B. B, F, E, CC. D, E, B, F D. A, G, F, C

14. Which sequence correctly shows an decrease in potential energy?A. E, F, B, G B. B, F, E, CC. D, E, B, F D. A, G, F, C