Physics Unit6: Work and Energy (id: 86bc00bf1)

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 skier, of mass 40 kg, pushes off the tyhxl.ufgjsghdgn0oh7 0 q:7qr0m. 8 +op of a hill with a yyd6hnihk8t mh i8*,2n initial speed of 4.0 m/s. Neglecting friction, how fast wi2kmhd h88i,ny6*t hy ill she be moving after dropping 10 m in elevation?

A. 7.3 m/s
B. 15 m/s
C. 49 m/s
D. 196 m/s


参考答案:  B


本题详细解析: 暂无

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