本题目来源于试卷: Physics Unit6: Work and Energy，类别为 通用国际物理
[单选题]
Does the centripetal forimj4mb r1tzjl w)q 9bd.+y lvc;2uh(1ce acting on)-w5cankg(ecx bb we/ygg( .7 an object do work on the object?
A. Yes, since a force acts and the object moves, and work is force times distance.
B. Yes, since it takes energy to turn an object.
C. No, because the object has constant speed.
D. No, because the force and the displacement of the object are perpendicular.
参考答案: D
本题详细解析:
暂无
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