Collision and momentum conservation (id: 01076f3a3)

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]
05.04: A freight carvu9 4)bv;fvr t is moving freel+ vlo+lpm1a ;yy along a railroad track at 7.0 m/s and collides with a tanker car that is at rest. After the collision, the two cars stick together andpvm+1 y ol+a;l continue to move down the track.
What is the magnitude of the final velocity of the cars if the freight car has a mass of 1,200 kg and the tanker car has a mass of 1,600 kg?

A. 0.0 m/s
B. 1.00 m/s
C. 3.00 m/s
D. 4.00 m/s
E. 6.00 m/s


参考答案:  C


本题详细解析: 暂无

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