A ball is thrown horizontally from the top of a 57.0 m building and lands 107.8 m from the base of the building. Ignore air resistance. How long (in s) is the ball in the air

Answer 1

Use the equation y =-57 +0 -9.8t²/2 there is no vertical velocity since θ =0 so 57 =4.9t² and solving for t gives t= 3.41s