Physics Unit6: Work and Energy (id: 524148f24)

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]
An object is lifted vesbjh;c j)7f4 dz,, i,u1yx gttrtically 2.0 m and ndkdn t4k l9:(held there. If the object weighs 90 N, how much w dkntd4:n(kl9ork was done in lifting it?

A. $360 \; J$
B. $180 \; J$
C. $90 \; J$
D. $0 \; J$


参考答案:  B


本题详细解析: 暂无

微信扫一扫，分享更方便