Collision and momentum conservation (id: 6e7ccc15a)

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]
95.37: A spring is compreak i, 8j ra/norh v8lhh96+r;xssed b bgd uc ;i;r,ezbe,+ y:98ltsnetween two objects with unequal masses,m and M, held togergd,t;nb9ee,8zl b+yc ;is: uther by a string as shown in the figure to the right. The objects are initially at reston a horizontal frictionless surface. The string is then cut. Which statement is true?

A. Kinetic energy is the same as before the string was cut.
B. The total final kinetic energy is zero.
C. The two objects have equal kinetic energy.
D. The speed of one object is equal to the speed of the other.
E. The total final momentum of the two objects is zero.


参考答案:  E


本题详细解析: 暂无

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