ASPECt
Energy: Forms, Transformation, Transfer, and Conservation
Item EG078002: When comparing two cars traveling at the same speed, the car that has more motion energy weighs more than the car that has less motion energy.
Two cars are traveling down a road at the same speed. Car 1 has more kinetic energy (motion energy) than Car 2. Does Car 1 weigh more than, less than, or the same as Car 2?
- Car 1 weighs more than Car 2.
- Car 1 weighs less than Car 2.
- Car 1 weighs the same as Car 2.
- More information is needed to compare the weights of the cars.
- Distribution of Responses
- Scale Score for Item Difficulty
(200[Easy]-800[Difficult]) - 512
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 435 | 1144 | 38% |
| Grades | |||
| 4–5 | N/A | N/A | N/A |
| 6–8 | 211 | 595 | 35% |
| 9–12 | 224 | 549 | 41% |
| Gender | |||
| Male | 227 | 571 | 40% |
| Female | 199 | 545 | 37% |
| Primary Language | |||
| English | 380 | 1003 | 38% |
| Other | 43 | 110 | 39% |