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]
Two cars collide head-on on a level frs p+pu( ii.q/qt*u:udiction-free road. The collision was compl:l on:y 0q1fghu/ gqdzb6*6 ivetely inelastic and both cars quickly came to rest during the collision. What is true about the velocity of this system's cen 0n:1vb izdqh6l/o 6y*uf:ggqter of mass?
A. It was always zero.
B. It was never zero.
C. It was not zero, but ended up zero.
D. none of the above
参考答案: A
本题详细解析:
暂无
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