gc physics textbook chapter 6 problems (id: 51bce321a)

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

[填空题]
A 21.7-kg child descends a 7(y8- 2zbfuxod3 ryrjslide 3.5 m high and reaches 1;h9qa iu d;g -a x+vbiclab6;the bottom with a speed of 2.2m/s How much thermal energy due i xbi;+qvaacl6h;;u9 abg-d 1to friction was generated in this process?    J

参考答案: 690±2%


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