ASPECt
Energy: Forms, Transformation, Transfer, and Conservation
When objects collide, contact forces can transfer energy from one object to another resulting in a change in the…
Item RG098002: After Cart A hits Cart B, Cart A is going slower and Cart B is going faster.
Two carts are rolling on a smooth flat surface. Cart A is traveling faster than Cart B and hits into the back of Cart B.
.png)
Both carts continue rolling forward after Cart A hits Cart B, but their speed changes. How does the speed of each cart change?
- Cart A is going faster after the collision than before the collision. Cart B is going slower after the collision than before the collision.
- Cart A is going slower after the collision than before the collision. Cart B is going faster after the collision than before the collision.
- Both carts are going faster after the collision than they were before the collision.
- Both carts are going slower after the collision than they were before the collision.
- Distribution of Responses
- Scale Score for Item Difficulty
(200[Easy]-800[Difficult]) - 485
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 697 | 1378 | 51% |
| Grades | |||
| 4–5 | 134 | 241 | 56% |
| 6–8 | 305 | 634 | 48% |
| 9–12 | 258 | 503 | 51% |
| Gender | |||
| Male | 315 | 636 | 50% |
| Female | 372 | 720 | 52% |
| Primary Language | |||
| English | 619 | 1205 | 51% |
| Other | 65 | 148 | 44% |