gc textbook chapter 13 temperature and kinetic theory (id: a1545d1fc)

本题目来源于试卷: gc textbook chapter 13 temperature and kinetic theory，类别为 IB物理学

[填空题]
A 1.0-kg trash-can lhk h27 ia.he/u9 eqgx6:hsqt)id is suspended aga(h 9muldbuf.hiiq5yi)tx, 06 inst gravity by tennis balls thrown vertically upward at it. How many tennis balls per second must rebound from the lid elbxi f0.imy u6ld ih)9,hu t(5qastically, assuming they have a mass of 0.060 kg and are thrown at 12m/s   balls/s

参考答案: 6.8±2%


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