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运动学中使用的图象,常见的有位移-时间图和速度—时间图,其应用主要有两个方面:一是理解图象的物理意义,能识别图象,特别注意截距、斜率、交点、面积的含义;二是根据分析问题的需要,作出相应的图象,使问题更容易分析。上述第二个方面的应用方法,对于分析一些较为复杂的运动问题,往往能起到意想不到的作用,属于深层次的应用,现举例说明。
The images used in kinematics usually have displacement-time diagrams and velocity-time diagrams. Their applications mainly include two aspects. First, they understand the physical meaning of the image and can identify the image, paying special attention to the intercept, slope, The meaning of the points of intersection and area; the second is based on the analysis of the needs of the problem, make corresponding images, so that the problem is easier to analyze. The application method of the second aspect mentioned above can often play an unexpected role in the analysis of some of the more complex sports issues and is a deep application.