Centre of mass system (id: 634516d22)

本题目来源于试卷: Centre of mass system，类别为 美国物理杯赛(Physics Bowl)

[单选题]
10.34: A 4.0 kg object in deep sp 1r gj -x)if+r9c5. xfkhmt(rsace moves at a constantcn3dmf ;j 9;at velocity of 10 m/s along the +x axis. The object suddenly explodes into 2 equal mass pieces. Immediately after the explosion, one piece is now moving directly along the –y axis with a speed of 8.0m/s. What was the size of the impjtc9;an; 3fdmulse (in proper MKS units) provided to this piece now moving along the –y axis from the explosion?

A. 12.8
B. 16.0
C. 25.6
D. 36.0
E. 43.1


参考答案:  C


本题详细解析: 暂无

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