question : a car travelling at constant speed 20m/s overtakes another car which is moving at constant acceleration of 2 m/s^2 and it’s initially at rest . assume the length of each car to be 5 meters . thetotal road distance used in overtaking is ... my attempt : for overtaking , t = distance between car 1 and car 2 + 5+5+5 / 20-2t 20-2t is the average velocity . with this I get a quadratic equation , which I had to solve by formula method . But , for my method 2 variables are unknown . Been trying this problem for past 2 hours . help please . I'll be really glad .