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动量守恒和能量守恒是自然界中的普遍规律,用动量守恒和能量守恒定律综合解决相互作用的物体系统的做功、能量转化等问题,是高考的热点.解这一类问题的基本思路是:首先,建立清晰的物理图景,抽象出物理模型,建立动量守恒方程;其次,分析物体间能量的转移和转化过程,建立能量守恒方程;最后,将两方程联立求解.动量守恒和能量守恒定律的综合应用渗透在整个高中物理知识的多个领域,现归纳如下:
Conservation of momentum and conservation of energy are universal laws in the natural world. Using energy conservation and conservation of energy to comprehensively solve the problems of work and energy conversion in interacting object systems is a hot topic of college entrance examination. The basic idea for solving this type of problem is: First, Establish a clear physical picture, abstract the physical model, and establish momentum conservation equations; secondly, analyze the process of energy transfer and transformation between objects and establish the energy conservation equation; finally, solve the two equations together. The law of conservation of momentum and the conservation of energy The comprehensive application of infiltration in various areas of high school physics knowledge is summarized as follows: