Collision and momentum conservation (id: ff79f15d3)

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]
96.35: A projectile of mass c:c9behkx8 g:a c h-2em is fired horizo0qsq5hq)osm5r .-ewfu 4 :aemntally from a spring gun that rests on a horizontal frictionless surface. See the accompanying figure. The mass of the gun is M. If the kinetic energy of the projectile after firing iq-04hefes .)rusmam55 q ow:qs $E_k$ , the gun will recoil with a kinetic energy equal to:

A. $E_k$
B. $\frac{m}{M}E_k$
C. $\frac{m}{M+m}E_k$
D. $\frac{M+m}{M}E_k$
E. $\sqrt{\frac{m}{M}}E_k$


参考答案:  B


本题详细解析: 暂无

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