所谓碰撞 ,是指两物体经过极短时间的相互作用而使各自的动量和动能发生明显的变化过程 .研究实际碰撞问题应遵循什么样的规律呢 ?笔者愿与同仁共同探讨 .一、碰撞过程结束后 ,系统动量和动能的变化关系当两物体发生碰撞时 ,相互碰撞的内力作用时间短 ,作用力大 ,所以一般情况 The so-called collision means that the two objects undergo a very short time of interaction to cause their respective momentum and kinetic energy to change significantly. What kind of law should be followed in the study of actual collision problems? The author is willing to discuss with colleagues together. First, the collision process After the end, the relationship between momentum and kinetic energy of the system changes. When the two objects collide, the internal forces that collide with each other have a short acting time and a large force, so the general situation