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 proton, of mass m, c.da+mt zm-ro1c 6z8p*n*hqb atrgb2uy aeih**b+h8hu .( rnzw z1;+ wa 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, what speed will the alpha-particle have after the collisi1wz+h.(;ibn eu b yurh+*hr*g z28wa aon? (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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