本题目来源于试卷: Physics Unit2: Kinematics One Dimensional Motion，类别为 通用国际物理
[单选题]
When an object is released from re*xy3z w h*g1dmst and falls in theqz ;fv b-s p drfs(u)b54xu)/k absence of friction, which of fz 5/)s;sbr)u( fvbp-kd 4ux qthe following is true concerning its motion?
A. The speed of the falling object is proportional to its mass.
B. The speed of the falling object is proportional to its weight.
C. The speed of the falling object is inversely proportional to its surface area.
D. None of the above is true.
参考答案: D
本题详细解析:
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