题目甲、乙两车在平直公路上同向行驶,其v-t图像如图1所示。已知两车在t=3 s时并排行驶,则()A.在t=1 s时,甲车在乙车后B.在t=0时,甲车在乙车前7.5 mC.两车另一次并排行驶的时刻是t=2 s D.甲、乙两车两次并排行驶的位置之间沿公路方向的距离为40 m解法一:图像法结合排除法(v-t图线与t轴所包围的面积表示位移) Subject A, B two cars in the same direction on a straight road driving, the v-t image shown in Figure 1. It is known that two cars are traveling side by side at t = 3 s, () A. At t = 1 s, a car is at B after B. B. At t = 0, a car is 7.5 mC ahead of B. Another side-by-side driving time is t = 2 s D. A and B two vehicles side by side the distance between the direction of the road along the direction of the distance is 40 m Solution A: Image method with exclusion method (vt line and t-axis Surrounded by the area that displacement)