碰撞问题是高中物理的重点和难点之一,从能量角度,碰撞可分为弹性碰撞、非弹性碰撞、完全非弹性碰撞.在平时的习题乃至高考题中有一大类与碰撞相类似的习题:当两个物体发生相互作用时,系统所受的外力之和为零,所以相互作用的过程中,系统动量守恒;系统的能量在动能与重力势能、弹性势能、电 The collision problem is one of the key and difficult aspects of high school physics. From the energy point of view, collisions can be divided into elastic collisions, inelastic collisions, and completely inelastic collisions. There are a large number of collision problems in the usual exercises and even college entrance examination questions: When two objects interact with each other, the sum of the external forces received by the system is zero. Therefore, during the interaction process, the system momentum is conserved; the energy of the system is in terms of kinetic energy and gravitational potential energy, elastic potential energy, and electricity.