Physics Unit6: Work and Energy (id: 90b0ce469)

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]
You lift a 10-N physics book up in wzzy q8g3/uh2the air a distance of 1.0 m, at a conssm6.n kn jn(,rfn8.bqksc w+d3p ,3tltant velocity of l .s n,qkt fsj3pn,w+brkd(n6.c8 m3n0.50 m/s. What is the work done by the weight of the book?

A. +10 J
B. -10 J
C. +5.0 J
D. -5.0 J


参考答案:  B


本题详细解析: 暂无

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