Ball Collision to Rectangle

ok, the ball has to bounce on a direction depending on wich side of the recangle it hits, I try it, but I'm only able to use the top side and the bottom side together OR th left side and the right side toghether but not all of them. I'm sure there must be a way of doing this... if anybody can helpme please. note: the ball is not inside the recangle,they both are in a space like in the game of pong. ## Deliverables Explanation of hot to, or a full program, whatever it anwser the paradigm.