國三理化直線運動.運動定律 - 運動
By Belly
at 2010-10-09T00:00
at 2010-10-09T00:00
Table of Contents
請高手幫忙解答~~謝謝有一個質量為2kg的木塊,若施與水平推力8N恰可使木塊在平面上作等速度運動;若放開手時物體速度為12m/s,則經過幾秒之後物體停止運動?某物體的位置X[m]與時間t〔s〕的關係式為X=3t^2+4t+5,則物體的初速為多少m/s?甲車以時速72km/hr在高速公路上行駛,乙車以時速108km/hr��
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運動
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By Yedda
at 2010-10-12T19:40
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at 2010-10-13T08:01
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at 2010-10-13T12:43
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