Question 3. (4 points for each part (a)-(b), graded for correctness) Consider an airplane on the runway preparing for takeoff. (a) Assume the distance the airplane travels along the runway is given by the function D(t) = %t2, where t is measured in seconds from the moment the brakes are released and the distance is measured in meters from the start of the runway. The minimum speed the airplane needs to become airborne is 180 meters per second. How long Will it take for the airplane to become airborne? Considering this, What should the minimal length of the runway be? (Don't forget to include units.)