本题目来源于试卷: Impulse and momentum，类别为 美国物理杯赛(Physics Bowl)
[单选题]
17.27: A 2.0 kg mass moves at 10.0 m/s when it has ik3lc+o52yn4pws kdmu 0a: d) a col gti;pv-7udiym c- )c+lision in space. The mass’s speed was unchanged, but the direction of its -icguvpmi tdc) +;y7- velocity was altered by $80^{\circ}$. If the collision lasted 0.25 s, what was the magnitude of the average force exerted on the mass?
A. 0 N
B. 54.7 N
C. 102.8 N
D. 122.5 N
E. 150.3 N
参考答案: C
本题详细解析:
暂无
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