试题与答案

关于物体的动能,下列说法中正确的是( ) A.一个物体的动能可能小于零 B.一个

题型:选择题

题目:

关于物体的动能,下列说法中正确的是(  )

A.一个物体的动能可能小于零

B.一个物体的动能与参考系的选取无关

C.动能相同的物体速度一定相同

D.两质量相同的物体,若动能相同,其速度不一定相同

答案:

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