How old are you?
A pool is located on the roof of an apartment building, 27.0 meters above the street below. The building’s wall is 30.0 meters high, forming a 3.0 meter high barricade. Somehow, some jackass’s son managed to throw his handball over, and onto the street. A good samaritan sees it fall, and throws it back at a 70.0 ° angle above the horizontal, 48.3 meters from the base of the building’s wall. The ball takes 4.00 seconds to reach a point above the building’s wall.
What was the ball’s velocity?