本题目来源于试卷: gc textbook chapter 2 Kinematics in One Dimension，类别为 IB物理学
[问答题]
As a freely falling o04sc f; 8vl xoyi8qnq-b,f)bqmx8gfr r5kx -2yject speeds up, what is happening to its acceleration due to gravity — does it increase, decrease, or stay the sf8x2 m)rrb,k 5-yqxgf ame?
参考答案:
As
a freely falling object speeds up, its acceleration due to gravity stays the
same. If air resistance is considered,
then the acceleration of the object is due to both gravity and air
resistance. The total acceleration gets
smaller as the object speeds up, until the object reaches a terminal velocity,
at which time its total acceleration is zero.
Thereafter its speed remains constant.
本题详细解析:
暂无
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