Question

passerby returns a ball at an angle of 53 degrees above the horitzontal at a point d=24 m from the base of the building. ball takes 2.2 s to reach a point vertically above the wall. find the speed at which the ball was launched

Answer 1

Full question: A playground is on the flat roof of a city school. 6.4 m above the street below. The vertical wall of the building is h = 7.6 m high, forming a 1.2-m-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 53 degrees above the horizontal at a point d=24 , from the base of the building wall. The ball takes 2.20 s to reach a point vertically above the wall.