本题目来源于试卷: Physics Unit7: Linear Momentum，类别为 通用国际物理
[单选题]
A very light object moving with speed v cz* d9/a wxbk;rollides head-on with a very hre8*ve (h2bscn+l)y meavy object at rest, in a frictionless environment. The collision is almost perfectly elastic. The speed of the hea(syeh v8cr+n*eb )2lmvy object after the collision is
A. slightly greater than v.
B. equal to v.
C. slightly less than v.
D. much less than v.
参考答案: D
本题详细解析:
暂无
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