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在教学中应适当地向学生介绍一些相对运动的基本知识和简单规律,引导学生通过参照系的转换来理解相对运动的观点,提高学生灵活处理问题和一题多解的能力,这对高考应试大有裨益。一般把运动着的B物体作为参照系来描述A物体的运动,叫做A对B的相对运动,A物体相对B参照系的速度叫做相对速度,简记作ν_(AB);A物体相对地的速度叫做“绝对”速度,记作ν_A;B参照系相对地的速度叫做“牵连”速度,记作ν_B。在只有平动的情况下,三种速度的关系为ν_A=ν_B+ν_(AB)。即绝对速度等于牵连速
In teaching, students should be introduced to the basic knowledge and simple laws of relative movements, guide students to understand the relative movements through the transformation of the reference system, and improve the students’ ability to handle problems and solve multiple problems flexibly. Great benefit. In general, the moving object B is used as the reference system to describe the movement of the object A, which is called the relative movement of the A to B. The velocity of the object A relative to the frame B is called the relative velocity, and it is abbreviated as ν_(AB); the object A is relatively The speed is called “absolute” speed, denoted as ν_A; the relative speed of frame B is called “implicated” speed, denoted as __B. In the case of translation only, the relationship between the three speeds is ν_A=ν_B+ν_(AB). The absolute speed is equal to the speed