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]
A 500-kg elevator is pulled upward with a constant forcdaa ua r8w, yu5 o-q30xibq7f,e of 5500 N fo7ph965bv0yofu:u q z jr a distanceob6z9 :yupfjqhu5v 07 of 50.0 m. What is the work done by the 5500 N force?
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: A
本题详细解析:
暂无
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