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就中学物理中一个具体的函数图象而言,利用它可以解决不少物理问题。例如,根据匀变速直线运动的速度图象,可以求出物体运动任一时刻的速度、加速度、一段时间内的平均速度及一段时间内的位移;可以在同一坐标上比较几个物体的运动情况,包括初速度、即时速度的大小和方向,加速度的大小和方向,运动时间的先后以及何时速度大小相等;还可以判断某一运动过程的几个阶段的运动性质与状况。下面所述图象的应用,是在学生已经掌握了物理课本中图象的基础上,应用图象巧妙地提出物理问题并直观、简捷、灵活、准确地解决问题而言的,这些方面的应用主要
For a specific function image in the middle school physics, it can be used to solve many physical problems. For example, according to the speed image of the uniform speed change linear motion, the speed, acceleration, average speed over a period of time, and displacement over a period of time of the object motion can be obtained; the motion of several objects can be compared on the same coordinates. Including the initial speed, the size and direction of the immediate speed, the magnitude and direction of acceleration, the sequence of the movement time, and when the speed is equal; it is also possible to judge the nature and status of the movement of several phases of a certain exercise process. The application of the image described below is based on the students having mastered the images in the physics textbook, applying the image skillfully to present the physical problems and intuitionistically, simply, flexibly, and accurately solving the problems in terms of application of these aspects. main