Physics Bowl by Topic 4: Kinematics - part III Projectile Motion (id: a1cddff82)

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 hori a mtax,h7uv 7ig6f,wt;9d ps6zontally, direuwz 2)v6-hwt31 /fxfwx gxpy ,ctly at the center of a target 20 m away. The arrow hits 0.050 m below the center of the taxf- x2w uy3w)v6pfwhx, t1 /zgrget. 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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