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2020-02-12View Original

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选择题:刚体作平动时,某瞬时体内各点的速度与加速度为( )。 A.体内各点速度不相同,加速度相同B.体内各点速度相同,加速度不相同C.体内各点速度相同,加速度也相同D.体内各点速度不相同,加速度也不相同 答案:C 刚体作平动时,某瞬时体内各点速度和加速度都相同,可以看作是一个点的运动。 提示:能阐述出解题过程的给予额外奖励,答案回复可见!
Reply #22020-02-12
C.体内各点速度相同,加速度也相同
Reply #32020-02-12
C.体内各点速度相同,加速度也相同
Reply #42020-02-12
c 可根据平行移动刚体的定义判断。

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