本题目来源于试卷: Collision and momentum conservation，类别为 美国物理杯赛(Physics Bowl)
[单选题]
97.14: A 5000-kg frexg lx+m,n ac03k)yb 2eight car moving at 4.0 km/h collixx0e+wfsvamg w (d :19 rns;h4des and couples with an 8000-kg freight car wsm: h(9svxw+ 1ar4e f0 d;xnwghich is initially at rest. The approximate common final speed of these two cars is
A. 1.0 km/h
B. 1.3 km/h
C. 1.5 km/h
D. 2.5 km/h
E. 4.0 km/h
参考答案: C
本题详细解析:
暂无
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