Physics Unit2: Kinematics One Dimensional Motion (id: 8d23cf6c8)

本题目来源于试卷: Physics Unit2: Kinematics One Dimensional Motion，类别为 国际高中通用物理

[单选题]
A ball is thrown upward at a velocity of ir:l d x3w2wj+y j e+mg+nn6i919.6 m/bt5fxk htc,u/o:ni - )s. What is its velocity after 3 foh:k-/ ib u,nx5t)ct.00 s?

A. 9.8 m/s upward
B. 9.8 m/s downward
C. zero
D. 19.6 downward


参考答案:  B


本题详细解析: 暂无

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