gc physics textbook chapter 6 problems (id: c4440f61d)

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 1.60-m tall person lifts a 2.10-kg if*py1zv7;jf book from the ground so it is 2.20 m n vz* (ke*uv* , b8oopflih;d2above the ground. Whldi(;hfbuk* nevv* ,oo8*pz 2at is the potential energy of the book relative to
(a) the ground,    J
(b) the top of the person’s head?    J
(c) How is the work done by the person related to the answers in parts (a) and (b)?    J

参考答案:
空格1: 45.3±2%  空格2: 12±2%  空格3: 45.3±2% 


本题详细解析:

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