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 dixp,0fd gid xz h3;hc8+o-crj. stance anhsl7u c/ra,l/7va7f 1ao: n 6p m(kqeyd gains 30 J of kinetic energy. Do not ignore air resistance. How much gravitational potential energy did the ball lo7:kq 7evac1 o7yna(s/a 6 ,u/hlfrlpm se?
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
| 
