高中物理在“测定匀变速直线运动的加速度”实验中,提出了采用“逐差法”求加速度a。通常采用将打点纸带分成若干小段,分别进行长度测量后,使用公式△x=aT2,用“逐差法”求得几个加速度的数值,再求它们的平均值作为测量结果。举例说明用“逐差法”求匀变速直线运动的加速度。 High school physics in the “determination of uniform acceleration linear acceleration” experiment, the use of “difference method ” to find the acceleration a. Usually used to break the paper strip into several small pieces, respectively, after the length measurement, the use of the formula △ x = aT2, using the “difference method” to obtain a few acceleration values, and then find their average as the measurement results. An example of using the “difference method” and uniform acceleration linear acceleration.