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, at rest, is struck head-on bjauld , 73y+ngy anqv456l0 tvvrkh p0mr( lp)+qtgn9t j) 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 h r4 h+tvnglpj) p5vmtq00r6()kv9t ql ave 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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