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 toy rocket, weighing 10cqlz /s4y(aud08n v+o N, blasts straight up fr1zqqd q jqdj9-v t 7btj;66lb90s cta2ets:-r om ground level with a kinetic energy of 40 J. At the exactbtqvjj2-dt 0e9q -dssc97l:tb 6rj;6 q1tzqa 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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