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 proton, of mass m,t3zmn bjzg1*koj:l,bi3ft 0 4 i)8k xc z4iqigxc)5 f*3 drkv8 at rest, is struck head-on by an alpha-particle (which consists of 2 protons and 2 neutrons) moving at speed v. If the collision is completely elastic, whazd5f4 ii 38cg q)*vrkxt speed will the alpha-particle have after the collision? (Assume the neutron's mass equals the proton's mass.)
A. zero
B. 2v/3
C. 3v/5
D. 5v/3
参考答案: C
本题详细解析:
暂无
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