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 ai4h lk 90x4dtbnxz3sxnqc( 01odi;lp1o aakdn8,ofiv* g5lo na0 :5c.med horizontally, directly at the center of a target 20 m away. The arrow hits 0.050 m below th a;f .:ao ,ip5c0ivgo18*aldnnok5 l de center of the target. Neglecting air resistance, what was the initial 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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