一、匀速直线运动的物体的速度—时间图象匀速直线运动的v-t图象是一条平行于t轴的直线.从0—t时间内,图线与t轴所夹图形为矩形,其面积为vt.所以,对于匀速直线运动,物体的位移对应着v-t图象中一块矩形的面积,如图1所示.二、匀变速直线运动的v-t图象如图2所示,把每一小段Δt内的运动 A uniform linear motion of the object velocity - time image uniform linear motion vt image is a straight line parallel to the t-axis from 0-t time, the plot line and the t-axis of the clip is rectangular, the area is Therefore, for constant linear motion, the displacement of the object corresponds to the area of ​​a rectangle in the vt image, as shown in Figure 1. Second, the vt image of the uniform velocity linear motion shown in Figure 2, each of the small Δt Within the movement