Physics Unit3: Kiematics Motion in Two Dimension & Vectors (id: 6e90b20c1)

本题目来源于试卷: Physics Unit3: Kiematics Motion in Two Dimension & Vectors，类别为 通用国际物理

[单选题]
A ball is thrown with-ea3n acuy n*1 a velocity of 20 m/s at an awv8 u,-2jkx .i7l r+lvvemwa3ngle of $60^{\circ}$ above the horizontal. What is the horizontal component of its instantaneous velocity at the exact top of its trajectory?

A. 10 m/s
B. 17 m/s
C. 20 m/s
D. zero


参考答案:  A


本题详细解析: 暂无

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