a race track is 500 meters long.car A moves with a constant velocity of 40m/s, approaching the start line.when car A reaches the starting line, car b, who is waiting stationary at the starting line, accelerates at a rate of 10m/s^2. which car will finish first
how long does it take each car to go 500m?
A: t = 500m/(40 m/s)
B: 5t^2 = 500