為甚麼合力=0時,物體還是會作等速度運動? - 運動
By Lily
at 2007-08-23T00:00
at 2007-08-23T00:00
Table of Contents
EX:一起重機以等速度V提起重物,則上拉的力F與重力W的關係為何?答案是F=W既然F=W,那為神麼不是靜止呢他的拉力與重力一樣,為神麼還會動呢?
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運動
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By Ophelia
at 2007-08-27T10:11
at 2007-08-27T10:11
By Todd Johnson
at 2007-08-25T19:38
at 2007-08-25T19:38
By Carol
at 2007-08-25T17:39
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