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 10 N,wq.e9t;1b6rj0:cqk+e zhz qe2cg 6ckq( f;bh blasts stua,h;q +nu-sy x (e4bkraight up from ground level with a kinetic energy of 40 J. At the exact top of its trajectory, its total mechanical energy is 140 J. To what vertical height4(-b;u as+,ex kh yuqn 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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