本题目来源于试卷: Work Energy and Power，类别为 美国物理杯赛(Physics Bowl)
[单选题]
97.33: A softball player catches a balrds2 r :szt8,z6 oix3nl of mass m, which isu*;8kr x ,grd+4 etfgk moving toward her with horizontal speed v. While bringtd4 rfk *ug,;kg+ex8ring the ball to rest, her hand moves back a distanced. Assuming constant deceleration, the horizontal force exerted on the ball by her hand is
A. $\frac{mv^{2}}{2d}$
B. $\frac{mv^{2}}{d}$
C. $mvd$
D. $\frac{2mv}{d}$
E. $\frac{mv}{d}$
参考答案: A
本题详细解析:
暂无
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