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 diip 2v /;dc 5un5aej+sostance and gainsnf)e(xi46vzg tg z1 d;vf(0wy 30 J of kinetic energy. Do not ignore air resistance. How much gravitational potential energy did the ball los ;4f g()inzv6(tdgv0yzw1 xf ee?
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: A
本题详细解析:
暂无
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