…Generally, the degree of repulsion is expressed by the ratio of the relative velocities before and after (the negative sign is used because the direction of v 1 - v 2 and the direction of v 1 ' - v 2 ' are opposite directions). e is called the coefficient of restitution, and e = 1 is a perfectly elastic collision, 0 < e < 1 is an inelastic collision, and e = 0 is called a perfectly plastic collision or a perfectly inelastic collision. When e < 1, the energy of the relative motion is converted into the internal energy (thermal energy) of the ball after the collision. … *Some of the terminology explanations that refer to "coefficient of restitution" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…一般には,これら前後の相対速度の比をもって反発の度合を表す(負号をつけるのはv1-v2の方向とv1′-v2′の方向が反対方向のため)。eを反発係数coefficient of restitutionといい,e=1が完全弾性衝突,0<e<1が非弾性衝突であり,e=0は完全塑性衝突,または完全非弾性衝突と呼ばれる。e<1の場合は相対運動のエネルギーは衝突後球の内部エネルギー(熱エネルギー)に変換される。… ※「coefficient of restitution」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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