gc textbook chapter 7 Linear Momentum (id: 729c97197)

本题目来源于试卷: gc textbook chapter 7 Linear Momentum，类别为 通用国际物理

[填空题]
An object at rest isv4c-;vk 5h- zml .d ixsmp2br0 sudd*7fdn6 btau+sr ,a7bwenly broken apart into two fragments by an explosion. One fragment acquires twice the kinetic energy of the other. What is the ratio of their m ba6 7*uanstd,wb7+ frasses?   

参考答案: 0.5±2%


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