在高中物理教学中,应用动量守恒定律和能量的观点解题是高考的热点和难点.有许多题目、题型稍有变化,同学们就束手无策,其实只要我们找到共性,巧用规律,问题便迎刃而解,下面以弹性碰撞为例,分类解析如下.在碰撞中,如果碰撞前后两物体的动能之和没有发生变化,此类碰撞称为弹性碰撞. In high school physics teaching, the application of the law of conservation of momentum and energy is the hot and difficult point of the college entrance examination. There are many questions and questions that change slightly so that if students find common ground and use law regularly, the problem will be solved In the following, taking the elastic collision as an example, the classification is as follows: In the collision, if the sum of the kinetic energy of the two bodies does not change before and after the collision, such collision is called elastic collision.