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解决物理问题常用的方法有:①解析法;②图像法;③表格法。在一般情况下解析法用得非常多,但图像在解题中的作用也不可忽视,速度一时间图像作用尤为突出,下面谈谈我的体会．首先,速度一时间图像描述的是速度随时间变化的函数关系,图线与时间轴包围的面积表示在这段时间里的位移;其次,速度一时间图像上某点的切线斜率表示此时加速度。匀变速直线运动速度图像为倾斜的直线,水平的直线表示匀速直线运动,加速度为零。非匀变速运动图像为曲线,曲线上某点切线斜率不断变化说明加速度在不断变化。根据速度一时间图像的特点,我们可利用速度一时间图像来解决多种类型题目．
The commonly used methods to solve physical problems are: 1 analytical method; 2 image method; 3 form method. In general, the analytical method is used very much, but the role of the image in the problem solving can not be ignored. The effect of the speed-time image is particularly prominent. Let’s talk about my experience. First, the speed-time image describes the function of speed as a function of time. The area enclosed by the graph line and the time axis represents the displacement during this period of time; secondly, the slope of the tangent line at a certain point in the image at the speed-time represents acceleration. . The uniform speed linear motion speed image is an inclined straight line, and the horizontal straight line represents a uniform linear motion with an acceleration of zero. The non-uniform variable speed motion image is a curve, and the tangent slope at a certain point on the curve constantly changes to indicate that the acceleration is constantly changing. According to the characteristics of speed-time images, we can use speed-time images to solve multiple types of problems.