Original Project
Energy: Forms, Transformation, Transfer, and Conservation
Item EG001006: 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.
- More information is needed to determine which ball has more motion energy.
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 2313 |
6–8 n = 1403 |
9–12 n = 902 |
Male n = 1112 |
Female n = 1156 |
English n = 2030 |
Other n = 230 |
||
| A. | Ball 1 has more motion energy. | 14% | 14% | 14% | 13% | 14% | 13% | 16% |
| B. | Ball 2 has more motion energy. | 61% | 62% | 61% | 60% | 63% | 63% | 47% |
| C. | Both balls have the same amount of motion energy. | 14% | 14% | 14% | 15% | 12% | 13% | 21% |
| D. | More information is needed to determine which ball has more motion energy. | 11% | 11% | 10% | 11% | 11% | 10% | 16% |