… v = can be said to be a vector whose components are (ẋ,ẏ,Ż). The acceleration vector a ( t ) is equal to the time rate of change ( t ) of v ( t ). As an example of motion on the xy plane, in the case of uniform circular motion with radius R and angular velocity ω, it is given by r = ( R cosωt , R sinωt ), v = ( -R ωsinωt , R ωcosωt ), a = ( -R ω2 cosωt , -R ω2 sinωt ) = -ω2r . … *Some of the terminology explanations that mention "acceleration vector" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…v=はその成分が(ẋ,ẏ,Ż)であるようなベクトルだといってもよい。加速度ベクトルa(t)はv(t)の時間的変化率(t)に等しい。xy平面上の運動の例として半径がR,角速度がωの等速円運動の場合,r=(Rcosωt,Rsinωt),v=(-Rωsinωt,Rωcosωt),a=(-Rω2cosωt,-Rω2sinωt)=-ω2rで与えられる。… ※「加速度ベクトル」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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