问题标题:
一个物理题,和牛顿第一定律有关原题是英文,请牛人回答.请尽量用英文回答.Unrestrainedobjectsincarspresentsignificantriskasvehiclecomestorestsuddenlyinanemergencysituation.Statewhathappenstoanobjectbef
问题描述:
一个物理题,和牛顿第一定律有关原题是英文,请牛人回答.请尽量用英文回答.
Unrestrainedobjectsincarspresentsignificantriskasvehiclecomestorestsuddenlyinanemergencysituation.StatewhathappenstoanobjectbeforeandduringthebrakingprocessandprovideanexplanationusingNewton’sLaw(s)ofmotionandanyotherrelevantconcepts.
梁锐城回答:
Objectstomaintainuniformmotion,byacombinedforceof0,byNewton'ssecondlawofaccelerationfor0;brakingprocess,theobjectsarethereverseofthepower,speedcontinuestodecreaseuntil0orcollision.
查看更多