英语翻译the total momentum of a system of interacting bodies remains constant,providing no external force acts.the rate of change of momentum of a body is directly proportional to the ecternal force cting on the body and takes place in direction
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/19 02:29:08
xmN@X,`5ٵm*P&1
(%V!PVxw[tw"@<;1FyL:/#@ -&m6 QcSBx쐦<6,=
19.ya7U&