A playground is on the flat roof of a city school, 6.00 m abovethe street below. The vertical wall of the building is 7.00 m high,forming a 1.00 m high railing around the playground. A ball hasfallen to the street below, and a passerby returns it by launchingit at an angle of 53.0° above the horizontal at a point 28.0 m fromthe base of the building wall. The ball takes 2.10 s to reach apoint vertically above the wall.
(a) Find the speed at which the ball was launched.
m/s
(b) Find the vertical distance by which the ball clears thewall.
m
(c) Find the distance from the wall to the point on the roof wherethe ball lands.
m