gc physics textbook chapter 6 problems (id: a11452e38)

本题目来源于试卷: gc physics textbook chapter 6 problems，类别为 IB物理学

[填空题]
You drop a ball from a heig9fu;wqkzl ys j:z (a ++2 tni(w;gfr:hht of 2.0 m, and it w)st- vcyjam-i b73c* bounces back to a height of 1.5 myma) j civ* tb3ws7c--.
(a) What fraction of its initial energy is lost during the bounce?    %
(b) What is the ball’s speed just as it leaves the ground after the bounce?    m/s
(c) Where did the energy go?

参考答案:
空格1: 25±2%  空格2: 5.4±2% 


本题详细解析:

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