[題目] 功能原理
[領域] 高中功能原理 (題目相關領域)
[來源] 補習班講義 (課本習題、考古題、參考書...)
[題目] http://www.badongo.com/pic/12812268
[瓶頸] (寫寫自己的想法,方便大家為你解答)
想請問A選項
A的位移和B的位移不一樣嗎?
想請問 A的瞬時速度 為什麼解答說是 B的瞬時速度乘上cosθ
很難體會為什麼因為B是等速動 角度在改變 所以A是加速動
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