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化复杂问题为几个简单问题的组合,是分析中学物理问题的常用方法之一,化曲线运动为几个直线运动的组合,是处理中学物理中较为复杂的曲线运动问题的常用手段之一.较为复杂的运动类问题常采用“运动的合成与分解”来求解.合成和分解轴——x、y轴方向的选取应尽量利用图形中现成的90°,尽量避免未知量、中间量的分解;并将位移、速度、加速度、受力等所有矢量全部参与分解,不能遗漏和重复.同时充分利用“时间”
Complexity is a combination of several simple questions. It is one of the commonly used methods to analyze the physics problems of high school. The curve movement is a combination of several linear movements. It is one of the most commonly used means to deal with the complicated curve movement problem in middle school physics. The more complex motion problems are often solved by the “synthesis and decomposition of motion.” The synthesis and decomposition axes - the selection of the x and y axis directions should make full use of the existing 90 ° in the graph, try to avoid the unknown amount, the middle amount Of the decomposition; and displacement, velocity, acceleration, force all the vectors involved in the decomposition, can not omit and repeat. At the same time make full use of “time”