Car B is traveling a distance d ahead of car A. Both cars aretraveling at 60 ft/s when the driver of B suddenly applies thebreakes, causing his car to decelerate at 12 ft/s^2. It takes thedriver of car A 0.75 s to react. When he applies his brakes, hedecelerates at 15 ft/s^2. Determine the minimum distance d betweenthe cars so as to avoid a collision.