动能定理是高中阶段求解动力学问题的重要方法之一,本文将针对动能定理从“敢用”、“会用”、“巧用”和“慎用”四个方面进行剖析.一、敢用高中阶段求解动力学问题的方法较多,常用的有:牛顿第二定律、动能定理和机械能守恒定律.关于三者用法的不同,同学们可以结合这样三类题来比较和理解:①已知光滑斜面的高度和角度,求物体从顶端由静 Kinetic energy theorem is one of the most important ways to solve kinetic problems in high school. In this paper, we will analyze the kinetic energy theorem from four “dare to use”, “will use”, “use” and “caution” First, dare to use high school to solve kinetic problems more commonly used are: Newton’s second law, kinetic energy theorem and the law of conservation of mechanical energy on the use of the three different, students can combine such three types of questions To compare and understand: ① known slope and the smoothness of the angle, the object from the top by the static