理化之最艱難的牛頓第二運動定律 - 運動
By Jacob
at 2010-10-10T00:00
at 2010-10-10T00:00
Table of Contents
1.10g乒乓球由距地面10m高的三樓頂靜止釋放,經2秒著地,若乒乓球落地前作等加速度運動,則乒乓球受空氣阻力與浮力的合力為多少牛頓?2.有一質量為2kg的滑車,由靜止開始受一定力作用,使其在光華的水平面上運動,若5秒內的平均速率為10m/s,則作用於此的外力大小為何?3.遺物體質量為12kg,境志在無摩擦力的水�
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運動
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at 2010-10-12T20:25
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