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动能定理是学生在高中阶段第一次接触到用能量的知识解决问题.它既是高中物理力学规律的重点,也将贯穿于整个高中物理的学习中.打好动能定理的基础对培养学生良好的能量观念、掌握能量分析的方法是非常重要的.动能定理较之于牛顿第二定律具有一定的优越性.牛顿第二定律表示的是力的作用瞬时效果,而由它推导出的动能定理则反映了力在空间上的累积效果,公式的推导不是简单的变形,物理意义已发生本质的变化.功是伴随一个物理过
Kinetic energy theorem is the first time in high school students come into contact with the knowledge of energy to solve the problem.It is not only the focus of high school physics and mechanics, but also will run through the entire high school physics study .To lay a good foundation for kinetic energy theory The concept of energy and the method of energy analysis are very important.Kinetic energy theorem has some advantages over Newton’s second law.Newton’s second law expresses the instantaneous effect of force and the kinetic energy theorem derived from it Reflects the cumulative effect of force in space, the derivation of the formula is not a simple deformation, the physical meaning of the essential changes have taken place. Work is accompanied by a physical