质量为 的物体以 的速度运动，它的动能为：
Answer and explanation
Correct answer: C.
其他选项为什么不对： 代入检验，、、都与算出的 不符。
- Step 1: 动能 。
- Step 2: 。
Answer
.
Practise more 运动学.
Free questions with an explanation for every one, and full timed Gaokao mock tests.
Correct answer: C.
Free questions with an explanation for every one, and full timed Gaokao mock tests.