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 projectile of mass m leav bzp:eku (:yq/es the groundyc 5yf xr6y-z2xx iyksq5+ 9+p with a kinetic energy of 220 J. At the highest point in its trajectory, its kinetic energy is 120 J. To what vertical height, relati 59xy +fyz5 6s-y2qxpr ycixk+ve to its launch point, did it rise?
A. $\frac{220}{mg} \; m$
B. $\frac{120}{mg} \; m$
C. $\frac{100}{mg} \; m$
D. Impossible to determine without knowing the angle of launch
参考答案: C
本题详细解析:
暂无
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