本题目来源于试卷: Physics Unit6: Work and Energy，类别为 国际高中通用物理
[单选题]
A toy rocket, weighing 10 N, blasts straight up from ground level with nu p6 gk*gq3k5a/8m;sllmdew)lmq (;wx -7h7 9wsaewd kinetic energy of 40 J. A lasl/d(79 ws wm xd)7q;- wm;meeh8lwt the exact top of its trajectory, its total mechanical energy is 140 J. To what vertical height does it rise?
A. $1.0 \; m$
B. $10 \; m$
C. $14 \; m$
D. $24 \; m$
参考答案: B
本题详细解析:
暂无
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