Original Project
Energy: Forms, Transformation, Transfer, and Conservation
Item NG016003: When a ball rolls downhill, the gravitational potential energy of the ball is transformed into motion energy.
A ball is rolling up and over a hill. The ball slows down as it moves from Position 1 to Position 3, and it speeds up as it moves from Position 3 to Position 5.
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When is the gravitational potential energy of the ball being transformed into motion energy (kinetic energy)?
- Only when the ball rolls from Position 1 to Position 3
- Only when the ball rolls from Position 3 to Position 5
- The entire time the ball is rolling from Position 1 to Position 5
- It is not being transformed at any time because gravitational potential energy cannot be transformed into motion energy (kinetic energy).
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
|||
|---|---|---|---|---|---|---|---|
| n = 3024 |
6–8 n = 1846 |
9–12 n = 1167 |
Male n = 1411 |
Female n = 1539 |
English n = 2642 |
Other n = 280 |
|
| A. | 15% | 17% | 12% | 15% | 14% | 14% | 20% |
| B. | 55% | 53% | 58% | 57% | 54% | 56% | 48% |
| C. | 21% | 21% | 22% | 19% | 23% | 21% | 23% |
| D. | 9% | 9% | 8% | 9% | 8% | 9% | 10% |