1.Two stunt drivers drive directly toward each other. At time, t=0, the two cars are a distance 85.0 m apart, car 1 is at rest, and car 2 is driving towards car 1 at speed 13.8 m/s. Car 1 begins to move towards car 2 at t=0, speeding-up with constant acceleration 3.52 m/s^2. Car 2 continues to...