重要考点突破考点1:运动和静止的相对性判断物体运动状态的原则是:若物体相对于参照物的位置发生了变化,则物体是运动的;若物体相对于参照物的位置没有发生变化,则物体是静止的.判断时,物体运动速度的大小和方向要同时考虑.它的题型有三类:第一类是根据参照物判断物体是否运动及运动的方向,第二类是根据物体的动和静判断选择 Important test points Breakthrough test points 1: The relative motion and stationary Judgment object motion state principle is: If the object relative to the reference position has changed, the object is moving; if the object relative to the reference position has not changed, The object is stationary. Judgment, the speed and magnitude of the object to be considered at the same time.It has three types of questions: The first category is based on the reference object to determine whether the direction of movement and movement, the second category is based on the object Dynamic and static decision to choose