守恒动量物理学

A fundamental law of physics holds that momentum is always conserved, meaning that unless some outside force enters a system, its total momentum must stay constant.───物理学一条基本定律认为动量守恒，也就是说，除非外力进入系统，否则总动量一定保持不变。

• conserved momentum physics
• conserved mass
• conserved mental health
• conserved land