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]
A railroad freight cafnphfspyj js.d4p/.wvr3 f6bph2p 11ts8;t 7r, mass 15,000 kg, is allowejf,.*jo,wr cob2/m- eu aq7mqq ,au1qyx ne*5 d to coast along a level track at a speed of 2.0 m/s. It collides and couples with a 50,000-kg second car, initially at rest and with brakes released. What is tox1qo* .wm7bme a-j ca5uu qrfn e*/q,j,yq2,he speed of the two cars after coupling?
A. 0.46 m/s
B. 0.60 m/s
C. 1.2 m/s
D. 1.8 m/s
参考答案: A
本题详细解析:
暂无
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