A tennis player wishes to return the ball so it just passes over the top of the net at a point where the net is 1.0 m high. He can return the ball at a speed of 14 ms-1 from a position that is 0.4 m vertically below the top of the net and is 8.0 m from the point where he intends the ball to cross the net.
a. At what angles to the horizontal could the player strike the ball in order to do this?