解决物理问题,既要能熟练应用常规方法,又要能突破常规灵活求解.如分解一个矢量时,没有必要一定采用常规的分解方法(如分解力时常用的正交分解法),也可以采用非常规的分解方法.因为没有特殊限制的话,一个矢量可以分解为无数对大小、方向不同的分矢量,这些分矢量共同作用的效果,都与那一个矢量单独作用的效果相同,所以,分解矢量完全可以打破常规采用其他的方法.如对中学物理中出现的小船渡河、力的分解、平抛运动、斜上抛运动等问题来说,如果善于打破常规采用非常规分解方 To solve physical problems, it is necessary to be able to apply both the conventional method and the conventional flexible method, and it is not necessary to use the normal decomposition method (such as the orthogonal decomposition method commonly used in decomposition) when decomposing a vector, Unconventional decomposition methods. Since there are no specific restrictions, a vector can be decomposed into numerous pairs of sub-vectors of different sizes and directions. The effect of these sub-vectors acting together is the same as that of a single vector. Therefore, the decomposition vector Can break the routine use of other methods such as the middle school physics appeared in the boat crossing the river, the force decomposition, flat throwing movement, throwing throwing movement and other issues, if you are good at breaking the conventional unconventional decomposition