please explain A race car driver has made a pit stop to refuel. After refueling, he leaves the pit area with an acceleration whose magnitude is 6.0 m/s2, and after 4.0s he enters the main speedway. At the same instant, another race car that is on the same speedway and traveling at a constant speed of 70.0 m/s overtakes and passes the entering car. If the entering car maintains its acceleration, how much time is required to catch the other car? (b) How far does each car travel?