A car is stopped at a traffic light. The light tums green, and at time 1 = 0 the car starts moving and travels with a constant acceleration. At that instant a truck traveling at constant speed ; is alongside the car. with the front of cach vehicle at position r - 0, as shown above. The truck passes the car. hut the car later catches up to the truck in front of a house, such that at time tp the front of each vehicle is at position r = D. On the axes below, sketch and label graphs of the velocity of the car and the velocity of the truck as a function of time. Indicate any important velocities or times.