摩差力恆與運動方向相反?? - 運動

By Skylar DavisLinda
at 2008-07-07T00:00
at 2008-07-07T00:00
Table of Contents
有看過一個選項在答案中是隊的摩擦力恆與運動方向相反嗯可是走路的時候假如你往前走摩擦力往前人也往前這是因為關節嗎如果這樣的話那個選項還能成立?...Showmore
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運動
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By Skylar DavisLinda
at 2008-07-09T16:42
at 2008-07-09T16:42

By Mia
at 2008-07-08T10:52
at 2008-07-08T10:52

By Oliver
at 2008-07-09T00:19
at 2008-07-09T00:19

By Catherine
at 2008-07-07T07:34
at 2008-07-07T07:34

By Jacob
at 2008-07-07T21:20
at 2008-07-07T21:20

By Olga
at 2008-07-07T17:28
at 2008-07-07T17:28

By Belly
at 2008-07-08T22:56
at 2008-07-08T22:56

By Sandy
at 2008-07-11T03:22
at 2008-07-11T03:22
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