在中学物理中,“追赶(相遇)问题”,是一个多研究对象问题,面对纷繁复杂的运动过程,学生往往束手无策,理不清头绪.其实所有的复杂问题都有一个共同的思维方法:化繁为简.体现在追赶(相遇)问题上,这就是:首先分别单独对其中的对象进行分析,然后再找出各研究对象运动之间的关系(一般情况指“时间关系”和“几何关系”).其口诀是:“各账各算,找关系”. In the middle school physics, “chasing (confrontation) issues” is a multi-research object issue. Faced with complicated and complicated movements, students are often helpless and can’t make sense. In fact, all complex issues have a common way of thinking: Familiarity is simple. It is reflected in the problem of catch-up (encounter). This is: first of all, analyze the objects separately, and then find the relationship between the movements of the objects of the study (general conditions refer to “time relations” and “geometry The relationship”). Its ambiguity is: “Every account counts, finds the relationship”.