1. The problem statement, all variables and given/known data A car is stopped at a traffic light. It then travels along a straight road so that its distance from the light is given by x(t)= bt^2 - ct^3, where b = 2.90 m/s^2 and c = 0.150 m/s^3. How long after starting from rest is the car again at rest? 2. Relevant equations Already found Calculate the average velocity of the car for the time interval t = 0 to t = 10.0 s which is 14 m/s. Calculate the instantaneous velocity of the car at t=0 which is 0. Calculate the instantaneous velocity of the car at t=5.00 s which is v = 17.8 m/s. Calculate the instantaneous velocity of the car at t=10.0 s which is v = 13.0 m/s. 3. The attempt at a solution I tried to find the acceleration from v = 17.8 m/s to 13.0 m/s which I got -0.96 but I don't know what equation I need to use to find the time for the car to come to a stop. I don't even know if I am on the right track.