动量守恒定律是高考考查的热点问题 ,每年考题都涉及该部分内容 ,题型也较广泛 ,因此 ,认真学好动量守恒定律是高中理科学生所必须的 .关于动量守恒定律的基本形式及成立的条件在高中物理选修课中已有详细的叙述和讨论 ,在这里不再多说 .在实际问题的处理中 ,经常遇到一些问题 The law of conservation of momentum is a hot issue in the college entrance examination. Each year’s exam questions involve this part of the content, and the question type is also more extensive. Therefore, it is necessary for students of high school science to carefully study the law of conservation of momentum. The basic form of the law of conservation of momentum and the conditions for its establishment There have been detailed narratives and discussions in high school physics electives. I will not talk more about them here. In dealing with practical problems, I often encounter some problems.