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 re 6bypx 7-*/fbhnj(q.q 8zwyqast, i2v5w19u liscz0 rt r ee1qo2x2qqd0+yx0 8izt s struck head-on by an alpha-particle (which consists of 2 protons and 2 neutrons) moving at speed u+09yleq2t2tv0o2s0x dcr 1x e rz5q8iwq1ziv. If the collision is completely elastic, what 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
| 
