本题目来源于试卷: Physics Unit6: Work and Energy，类别为 国际高中通用物理
[单选题]
A 500-kg elevator is pulle2 1pnzxv,v8rs s5 e+kdd upward with a constant forc b s 84(:qmvc-iltjcv*e of 5500 N for a distance of 50.0 m. What is the netbc mtsic8j:4 l(-q vv* work done on the elevator?
A. $2.75 \times 10^{5} \; J$
B. $-2.45 \times 10^{5} \; J$
C. $3.00 \times 10^{4} \; J$
D. $-5.20 \times 10^{5} \; J$
参考答案: C
本题详细解析:
暂无
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