1.将物体的相互作用划分为几个过程,每 一过程单独列式 碰撞是物体间相互作用的一种特殊形式. 碰撞突发性强、持续时间短、相互作用力大.在 碰撞过程中,外力作用通常远小于物体之间的 相互作用,可以忽略,故可认为动量守恒.碰撞 过程往往与碰撞前、后的过程相关联.碰撞是瞬 1. The interaction of an object is divided into several processes, and each columnar collision is a special form of the interaction between the objects. The collision is sudden and strong, the duration is short, and the interaction force is large. During the collision process The external force is usually much smaller than the interaction between the objects and can be ignored. Therefore, it can be considered that the momentum is conserved. The collision process is often associated with the process before and after the collision. The collision is instantaneous.