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 re( h+fl z4. f hstm+okp7ae(+ptt-)u 2dy6g6dv yut s-qleased from rest and falls in the absence of friction, which o-sqtyy6-g6tu u vd2)df the 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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