牛顿运动定律是高中学习阶段的重要部分,它是联系力学和运动学的纽带,运动情况比较复杂,解决起来有一定难度.学生往往在此阶段感觉物理非常难学,原因是不能充分理解题意,力和运动结合不到一起.采用分类讲述比较容易理解,同学能够很快掌握解题方法. Newton’s law of motion is an important part of the high school learning phase. It is the link between mechanics and kinematics. The movement is complicated and it is difficult to solve. Students often feel that it is very difficult to learn physics at this stage because the problem cannot be fully understood. The combination of force and movement is less than one. It is easier to understand using classification and classmates can quickly grasp the solution method.