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 hgfqe :+i-dyjh 6i+/c xr,4g ag;1u ,3xxagq dhorizontally, directly at the center of a target 20 m away. gxuq d 1hra,xag34;g,The arrow hits 0.050 m below the 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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