高中阶段所研究的运动一般是基本的、简单的运动,很少涉及到复杂的运动,通常以地面为参考系.但是在研究有相对运动的两个以上物体间的运动时,如果能够巧妙地选择另一相对运动的物体作为参考系,有时会大大简化解题过程,从而达到化难为易、事半功倍的效果.当选择运动的物体作为参考系时,公式中涉及的物理量除了运动时 The exercises studied in high school are generally simple and simple exercises, rarely involved in complex sports, usually on the ground, but when studying the movement of more than two objects with relative movements, Select another relative motion of the object as a reference frame, and sometimes will greatly simplify the problem-solving process, so as to make it easier, more effective multiplier effect. When the choice of moving objects as a reference frame, the physical parameters involved in the formula in addition to exercise