自じ由ゆう落らっ下かじゆうらっかじ字FuriganaMeanings1nounfree fallPhysics term for motion under gravity alone, without other forces such as air resistance.真しん空くう中ちゅうでは、すべての物ぶっ体たいが同おなじ加か速そく度どで自じ由ゆう落
