VladanS
2020-10-21T03:29:49+00:00
非弹性形变中动量并不守恒。因为有动能损失[img]http://img.nga.178.com/attachments/mon_201209/14/-47218_5052bca2a2f43.png[/img][img]http://img.nga.178.com/attachments/mon_201209/14/-47218_5052bca2a2f43.png[/img][img]http://img.nga.178.com/attachments/mon_201209/14/-47218_5052bca2a2f43.png[/img]同样是速度变化100公里。从200降到100和从100降到0动能多损失了两倍。你说这两倍的动能去哪了？被后车额外吸收了。