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贵刊在2007年第9期发表了李庆老师的“利用速度的定义式求解牵连物体的速度”一文.读后深受启发,对文中解题方法的正确性毫不怀疑,但对学生对该方法的理解和应用存有疑问.一道物理题往往不只涉及到一个物体,若物体间是通过绳、杆或接触面相互连接的,准确地找出牵连物体的速度关系是高中物理对学生的一项基本要求.在高中阶段解决此类问题一般有两种方法.第一种方法是利用几何知
In the 9th issue of 2007, your magazine published Li Qing’s article “Determining Speed of Implicit Objects Using Velocity Definitive Equations”. After reading this book, he was deeply inspired and did not doubt the correctness of the method of solving problems in the text, but Students have doubts about the method’s understanding and application. A physics problem often involves more than one object. If objects are connected to each other through ropes, rods, or contact surfaces, accurately identifying the speed relationship of the implicated object is a high school physical pair. A basic requirement for students. There are generally two ways to solve such problems in high school. The first method is to use geometric knowledge.