本题目来源于试卷: Physics Unit6: Work and Energy，类别为 通用国际物理
[单选题]
A ball drops some distance and lose +c (z:q. )bqqithyom2s 3 pn90xo))fmzg o- vtie2a;n7a+ppr m :0 J of gravitational potential energy. Do not ignore air resistance. How much kinetic energy did th +:af0mp o) 92pxovem-nn)gp7 az r;tie ball gain?
A. more than 30 J
B. exactly 30 J
C. less than 30 J
D. cannot be determined from the information given
参考答案: C
本题详细解析:
暂无
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