机械运动(简称运动)是“一个物体相对于另一个假定不动的物体位置的变化”.可见,一提到运动,必包括两个物体:前边的“一个物体”是运动物;后边的“另一个假定不动的物体”是参照物,没有运动物,失去了运动的主体.没有参照物,失去了运动的标准.所以运动物和参照物两者缺一不可,构造了一个统一的整体——机械运动。研究运动不能脱离参照物这一点却往往被人们忽视.因为,长期生活在地球上的人,从小起就自觉不自觉地把地球作为运动的参照物,久而久之,便形成运动可以脱离参照物而存在的错误观念.这种错误观念,对于进一步学好物理起着严重的干扰作用.因此,强调参照物的作用,不论对正确理解物理概念,还是 Mechanical motion (abbreviated as motion) is “the change in the position of an object relative to another hypothetical object”. It can be seen that when we talk about motion, we must include two objects: the “one object” in front is a moving object; the one behind Another hypothetical object "is a reference object, no moving object, lost the subject of movement. Without reference objects, the standard of movement is lost. Therefore, both the moving object and the reference object are indispensable, and a unified whole is constructed. - Mechanical movement. The fact that the research movement cannot be separated from the reference object is often overlooked because people who have lived on the Earth for a long time have consciously or unconsciously used the Earth as a reference for their movements. As time goes by, they form a movement that can escape from the reference and exist. The misconception that this kind of erroneous idea plays a serious interference role in further studying physics. Therefore, emphasizing the role of the reference object, regardless of the correct understanding of the physical concept, or