牛顿第二定律是动力学的基本定律,是高中物理的重要组成部分,在历年高考试卷中都有体现,然而大多数中学生对该部分的知识学习缺少归纳总结,没有前面系统的理解定律的作用,考试经常丢分。本文通过分析牛顿第二定律的“桥梁”作用在2012年高考试卷中的应用,让学生在学习的时候有一个较清晰的认识,同时也让教师在教这一部分知识时,到达更好的教学效果。 Newton’s second law is the basic law of dynamics, is an important part of high school physics, college entrance examination papers over the years have reflected, however, most of the students lack of knowledge of the part of the induction and conclusion, there is no previous understanding of the role of the system The exam often dropped points. This article analyzes the application of Newton’s second law ’s “bridge ” effect in the 2012 college entrance examination papers so as to enable students to have a clearer understanding while learning, and to make teachers reach better when teaching this part of knowledge The teaching effect.