【摘要】 针对大学物理中质点系动量守恒条件的获得过程,分析了动量守恒的不同含义,并给出了有限过程在不同情况下的动量守恒条件,建议根据无限小过程质点系的动量定理得出动量时刻守恒的条件.更多还原

【Abstract】 Aiming to the acquisition process of the momentum conservation condition for a particle system in college physics,we analyze different meanings of the momentum conservation,and give the momentum conservation in finite process.The momentum conservation should be obtained from the momentum law in infinitesimal process.更多还原