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 carh *-23wxjp nu)-ows lp cy u 3a(b8x*k4jq7l zvis moving freely 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 and c *37jqcl4k b ux(az8vyontinue 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

微信扫一扫，分享更方便