ASPECt
Energy: Forms, Transformation, Transfer, and Conservation
Item EG004005: A car has the most motion energy when it is traveling at the highest speed.
A man is driving a car. He slows down to stop at a stop sign.
When does the car have the most kinetic energy (motion energy)?
- When the car's speed is 30 miles per hour
- When the car's speed is 15 miles per hour
- When the car's speed is 0 miles per hour
- The car's kinetic energy is the same the whole time.
- Distribution of Responses
- Scale Score for Item Difficulty
(200[Easy]-800[Difficult]) - 442
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 979 | 1375 | 71% |
| Grades | |||
| 4–5 | 185 | 231 | 80% |
| 6–8 | 392 | 588 | 67% |
| 9–12 | 402 | 556 | 72% |
| Gender | |||
| Male | 449 | 645 | 70% |
| Female | 506 | 699 | 72% |
| Primary Language | |||
| English | 853 | 1184 | 72% |
| Other | 95 | 148 | 64% |