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> 一质量为1kg的物体被人用手由静止向上提升1m，这时物体的速度2 m/s，则下列说法错误的是（） A．手对物体做功12J B．合外力对物体做功12J C．合外力对物体做功2J D．物体克服重力做功10 J

问题：

发布时间：2024-09-13

一质量为1kg的物体被人用手由静止向上提升1m，这时物体的速度2 m/s，则下列说法错误的是（）

A．手对物体做功12J B．合外力对物体做功12J

C．合外力对物体做功2J D．物体克服重力做功10 J

参考答案：

提问用户：Nc***fMe

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一质量为1kg的物体被人用手由静止向上提升1m，这时物体的速度2 m/s，则下列说法错误的是（ ） A．手对物体做功12J B．合外力对物体做功12J C．合外力对物体做功2J D．物体克服重力做功10 J

可能感兴趣的题目：

一质量为1kg的物体被人用手由静止向上提升1m，这时物体的速度2 m/s，则下列说法错误的是（）

A．手对物体做功12J B．合外力对物体做功12J

C．合外力对物体做功2J D．物体克服重力做功10 J