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.
- Distribution of Responses
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 1421 | 2313 | 61% |
| Grades | |||
| 6–8 | 863 | 1403 | 62% |
| 9–12 | 552 | 902 | 61% |
| Gender | |||
| Male | 669 | 1112 | 60% |
| Female | 725 | 1156 | 63% |
| Primary Language | |||
| English | 1286 | 2030 | 63% |
| Other | 109 | 230 | 47% |