本题目来源于试卷: Physics Unit7: Linear Momentum，类别为 国际高中通用物理
[单选题]
You (50-kg mass) skate on ice68,c bptn u1sp at 4.0 m/s to greet your friend (40-kg maonp;l( 55j;fjkx c+el1rh7 mbss), who is standing still, with open arms. As you collide, while holding each other, with what speed do you b5rnpmk5fo x+hbj j1llc e ;7;(oth 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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