牛顿第二定律是中学物理的基础,它给出了物体运动状态的变化与外力的定量关系。在应用牛顿第二定律解答有关习题时,按照常规思维,一般采用力的正交分解法,但有些问题只对力进行分解,显得繁难,我们可以转换思维角度,同时分解加速度,做起来就比较简捷。 Newton’s second law is the basis of secondary physics, which gives a quantitative relationship between changes in the state of motion and external forces. In the application of Newton’s second law to answer the questions, in accordance with the conventional thinking, the general use of the force of the orthogonal decomposition, but some problems only to force decomposition, appears to be difficult, we can change the perspective of thinking, while accelerating decomposition, to do more Simple.