本题目来源于试卷: Physics Bowl by Topic 4: Kinematics - part III Projectile Motion，类别为 美国物理杯赛(Physics Bowl)
[单选题]
94.14: An arrow is aimed h45l wxq oh* .hmj9i qj7tht2l5orizo1w8u4*p (4ax2 uv / iqdge5rdpqvf.fjntally, directly at the center of a target 20 m away. The arrow hits 0.050 m below the center of the target. Neglecting air resistance, what was the initijd *q2vx8u agf(rf w.p/vped5q44ui 1al speed of the arrow?
A. 20 m/s
B. 40 m/s
C. 100 m/s
D. 200 m/s
E. 400 m/s
参考答案: D
本题详细解析:
暂无
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