ASPECt
Energy: Forms, Transformation, Transfer, and Conservation
Item EG001007: 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 kinetic energy (motion energy)?
- Ball 1 has more kinetic energy.
- Ball 2 has more kinetic energy.
- Both balls have the same amount of kinetic energy.
- Neither ball has any kinetic energy.
- Distribution of Responses
- Scale Score for Item Difficulty
(200[Easy]-800[Difficult]) - 451
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 933 | 1402 | 67% |
| Grades | |||
| 4–5 | 233 | 313 | 74% |
| 6–8 | 420 | 664 | 63% |
| 9–12 | 280 | 425 | 66% |
| Gender | |||
| Male | 434 | 657 | 66% |
| Female | 482 | 715 | 67% |
| Primary Language | |||
| English | 825 | 1227 | 67% |
| Other | 91 | 145 | 63% |