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Grade 9 Test on Mechanics 20241217 (id: 1afc50560)

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admin 发表于 2024-2-6 02:21:25 | 显示全部楼层 |阅读模式
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Suppose that a car traveling to the East (+x dfb2wz814llj6h h :uqeirection) /w : j2wigsmw9begins to slow down as it approaches / :g2wjw9 siwma traffic light. Make a statement concerning its acceleration.

A. The car is decelerating, and its acceleration is positive.
B. The car is decelerating, and its acceleration is negative.
C. The acceleration is zero.
D. A statement cannot be made using the information given.


参考答案:  B


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