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]
06.06: An arrow is shot through an apple. If the fmokoq5( oi/* 0.1 kg arrow changes speed by muj/n;/xi ,w*rv17d0 sj k:lftz (qcu 10 m/s during the collision (from 30 m/s to 20 m/s) and the apple goes from rest to a spf;tuqji jdz :/7mws rn0* (xl1u c/,kveed of2 m/s during the collision, then the mass of the apple must be
A. 0.2 kg
B. 0.5 kg
C. 0.8 kg
D. 1.0 kg
E. 2.0 kg
参考答案: B
本题详细解析:
暂无
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