质点以 的速率沿半径为 的圆做匀速圆周运动,其向心加速度大小为:
Answer and explanation
Correct answer: A.
其他选项为什么不对: 代入检验,、、都与算出的 不符。
- Step 1: 向心加速度 。
- Step 2: 。
Answer
.
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Free questions with an explanation for every one, and full timed Gaokao mock tests.
Correct answer: A.
Free questions with an explanation for every one, and full timed Gaokao mock tests.