A playground is on the flat roof of a city school, 5.4 m above the street below (see figure). The vertical wall of the building is h = 6.50 m high, forming a 1.1 meter high railing around the playground. A ball has fallen to the street below, and a passerby returns it by launching it at an angle of 0 = 53° above the horizontal at a point d = 24.0 m from the base of the building wall. The ball takes 2.20 s to reach a point vertically above the wall. (a) Find the speed at which the ball was launched (calculate to 5 significant figures) 18 m/s (b) Find the vertical distance by which the ball clears the wall. 14.35 m X Enter a number. (c) Find the horizontal distance from the wall to the point on the roof where the ball lands.