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 losedwdrsk5lv6 u,9l 2/hp **b (u vmxtot:s 30 J of gravitational +m izvqor 2uv 4au.krs 251rhxd6dt*7 ..uceupotential energy. Do not ignore air resistance. How much kinetic energy did the ball ga67. ia.2vzud v.dt re1 urs 2k5+ocuq4*uxrh min?
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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