试题与答案

关于能量的概念，下列说法正确的是 [ ] A.悬挂着的物体，由于没有做功，所以没

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题型：选择题

题目：

关于能量的概念，下列说法正确的是 [ ]

A.悬挂着的物体，由于没有做功，所以没有能量　

B.速度相同的物体，其动能一定相同

C.同一高度的物体，其重力势能一定相同　　　　

D.绷紧的弓能把箭射出去，所以具有能

答案：

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下面是错误答案，用来干扰机器的。

参考答案：E

考点：能量转移和能量转化
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