物哩,平面運動的計算。 - 運動

By Selena 
at 2006-09-03T00:00
at 2006-09-03T00:00
Table of Contents
某質點於平面上運動,其位置向量與時間的關係為r向量(t)=pti+qt2j,p>0,q>0,且皆為定值,則於某時刻t時質點之加速度方向與速度方向之夾角為θ,則tanθ=?(i上標三角,j也是上標三角)什麼是"運動的獨立性"?
    Tags:
        運動
        
All Comments

By Harry 
at 2006-09-04T00:39
at 2006-09-04T00:39

By Edward Lewis 
at 2006-09-06T18:48
at 2006-09-06T18:48
Related Posts
我體力不好....該如何增強體力

By Yedda 
at 2006-09-02T00:00
at 2006-09-02T00:00
愛運動的小孩不會變壞?

By Rae 
at 2006-09-02T00:00
at 2006-09-02T00:00
請問學長姐們,高三最後一年平時的作息要注意些什麼?

By Jacob 
at 2006-09-02T00:00
at 2006-09-02T00:00
週六住礁溪川湯,週日傍晚回台北,行程怎樣比較順?

By Lydia 
at 2006-09-02T00:00
at 2006-09-02T00:00
物理-直線運動的簡單問題

By Todd Johnson 
at 2006-09-02T00:00
at 2006-09-02T00:00