Original Project
Energy: Forms, Transformation, Transfer, and Conservation
Item EG001005: For two balls that have the same mass, the ball that is rolling faster has more motion energy.
Two identical balls are rolling down a hill. Ball 2 is rolling faster than Ball 1.
Which ball has more motion energy (kinetic energy)?
- Ball 1 has more motion energy.
- Ball 2 has more motion energy.
- Both balls have the same amount of motion energy.
- Neither ball has any motion energy.
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
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|---|---|---|---|---|---|---|---|---|
| n = 2523 |
6–8 n = 1439 |
9–12 n = 1074 |
Male n = 1248 |
Female n = 1228 |
English n = 2191 |
Other n = 258 |
||
| A. | Ball 1 has more motion energy. | 14% | 16% | 13% | 13% | 15% | 14% | 19% |
| B. | Ball 2 has more motion energy. | 64% | 63% | 65% | 63% | 64% | 64% | 57% |
| C. | Both balls have the same amount of motion energy. | 16% | 16% | 17% | 17% | 15% | 16% | 17% |
| D. | Neither ball has any motion energy. | 6% | 6% | 6% | 7% | 5% | 6% | 8% |