本题目来源于试卷: Physics Unit8: Rotational Motion，类别为 Generic Physics
[单选题]
The cutting cord on a gas-powerey.n qtb;,)qnrd weed c(l. pgn7/ 5cbov klj2autter is 0.16 m in length. If the motoro ljcva/5n bgk l(2p.7 rotates at the rate of 20 rev/s, what is the approximate linear speed of the end of the cord?
A. 20 m/s
B. 25 m/s
C. 35 m/s
D. 65 m/s
参考答案: A
本题详细解析:
暂无
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Post time 2024-1-22 02:51:16