一、定性分析例1甲、乙、丙三辆汽车以相同的速度同时经过某一路标,从此时开始,甲车一直做匀速直线运动,乙车先加速后减速,丙车先减速后加速,它们经过下一个路标时速度又相同,则哪一辆车先经过下一个路标?分析与解:由题可知这三辆汽车的初、末速度相同,它们经过的位移相同,而题 First, qualitative analysis example 1 A, B, C three cars at the same speed through a road sign at the same time, from this time on, a car has been doing a uniform linear motion, B car first accelerate and then decelerate, the first car to accelerate after deceleration, After they pass the next sign, they have the same speed. Which vehicle will go through the next signpost? Analysis and Reconciliation: From the question, we can see that the initial and final speeds of the three cars are the same, and they have the same displacement.