Physics Unit7: Linear Momentum (id: d829857eb)

本题目来源于试卷: Physics Unit7: Linear Momentum，类别为 通用国际物理

[单选题]
You (50-kg mass) skate on ice at 4., -;fc+a trsfz9d( rc3fx6k eq0 m/sjk:lyd l0(, s g5djfs/ to greet your friend (40-kg mass), who is standing still, with open arms. As you collide, whillkf5(0dssd/jgl y : j,e holding each other, with what speed do you both move off together?

A. zero
B. 2.2 m/s
C. 5.0 m/s
D. 23 m/s


参考答案:  B


本题详细解析: 暂无

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