物体在场中的机械运动,一是要根据物体的初速度等初始条件和在场中的受力情况确定物体的运动形式;二是要由物体的运动形式所满足的物理规律和场的几何边界限制确定物体运动的实际空间范围与实际时间所 The mechanical movement of the object in the field is based on the initial velocity of the object and other initial conditions and the presence of the force to determine the form of object movement; the second is to be the form of movement of objects to meet the physical laws and the geometric constraints of the field limits Determine the physical movement of the physical space and the actual time range