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动量和能量的综合问题是高考命题的热点,这类题目综合性强,灵活性大,分析能力要求较高.具有以下特点:①研究对象的多体性;②物理过程的复杂性;③已知条件的隐蔽性;④物理模型的实际性.下面通过例子作一分析.一、研究对象的多体性在动量和能量的综合问题中,由于物体间发生动量和能量的转移与交换,必然涉及到多个研究对象,需要根据所适用的条件和研究问题的方便,灵活选取不同的研究对象,从而为正确运用动量关系和能量关
The comprehensive problems of momentum and energy are the hot topics of college entrance examination proposition, which have the characteristics of comprehensiveness, flexibility and high analytical ability. They have the following characteristics: (1) the physicality of the research object; (2) the complexity of the physical process; (3) The concealment of the conditions of knowledge; ④ The physical model of the actual. Following an example for analysis. First, the research object of polygamy In the momentum and energy of the integrated problem, due to the occurrence of momentum and energy transfer and exchange between the inevitable Involving a number of research subjects, according to the applicable conditions and research problems, convenient and flexible selection of different research subjects, so as to correctly use the momentum relationship and energy