…the rate of change in velocity over time is expressed as acceleration, but when various forces are applied to the same object, the resulting acceleration is proportional to the force and its direction is the same as the force. This is called the second law of motion, and is expressed by the vector relationship F = m a , where F is force and a is acceleration. The proportionality constant m is called the mass of the object. … *Some of the terms that refer to the "Second Law of Motion" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…速度変化の時間的割合は加速度で表されるが,同じ物体にいろいろな力を加えたときに生ずる加速度は力に比例し,方向も力の方向と一致する。これを運動の第2法則といい,力をF,加速度をaとしてベクトルの関係式F=maで表される。比例定数mはその物体の質量と呼ばれる。… ※「運動の第2法則」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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