Original Project
Force and Motion
A moving object will maintain the same speed and direction of motion unless a force acts on it.
Item FM016004: If a school bus is slowing down, any forces moving it forward would have to be weaker than any forces slowing it down.
A school bus is slowing down as it comes to a stop sign.
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Which of the following statements is TRUE about the forces acting on the school bus while it is slowing down but still moving forward?
- As long as the school bus is still moving forward, the forward force of the school bus has not run out.
- As long as the school bus is still moving forward, any forces moving it forward would have to be stronger than any forces slowing it down.
- If the school bus is slowing down, any forces moving it forward would have to be weaker than any forces slowing it down.
- If the school bus is slowing down, any forces moving it forward would have to be the same strength as any forces slowing it down.
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
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|---|---|---|---|---|---|---|---|---|
| n = 3549 |
6–8 n = 2255 |
9–12 n = 1284 |
Male n = 1694 |
Female n = 1782 |
English n = 3196 |
Other n = 281 |
||
| A. | As long as the school bus is still moving forward, the forward force of the school bus has not run out. | 17% | 18% | 17% | 21% | 14% | 18% | 15% |
| B. | As long as the school bus is still moving forward, any forces moving it forward would have to be stronger than any forces slowing it down. | 25% | 24% | 29% | 24% | 26% | 26% | 23% |
| C. | If the school bus is slowing down, any forces moving it forward would have to be weaker than any forces slowing it down. | 38% | 38% | 39% | 39% | 38% | 38% | 40% |
| D. | If the school bus is slowing down, any forces moving it forward would have to be the same strength as any forces slowing it down. | 19% | 21% | 15% | 16% | 21% | 19% | 22% |