匀变速直线运动实验在高考中经常出现,本文结合历届高考实验题作分析说明.例1.(1999年上海)为了测定某辆轿车在平直路上的加速度(轿车起动时的运动可近似看做匀加速运动),某人拍了一张在同一张底片上多次曝光的照片(如图1所示),如果拍照时每隔2s曝光一次,轿车正身总长为4.5m,那 The uniform speed change linear motion experiment often appears in the college entrance examination. This article combines the previous college entrance examination experiment questions for analysis and explanation. Example 1. (Shanghai, 1999) In order to determine the acceleration of a car on a straight road (the movement of a car when starting it can be approximated as Evenly accelerated motion). Someone took a photo that was exposed multiple times on the same film (as shown in Figure 1). If the camera is exposed every 2s, the total length of the car is 4.5m.