Press the green flag, you will see the ball bouncing off the walls. When you want to see something happen then press the space bar. The ball should fly off the screen after 8 seconds. I also put a handy variable in the left hand corner that shows you the X coordinate. If you think this is a trick and that I have changed the X coordinates on the variable to fool you, I promise this is not fake. I haven't used any hide blocks for the ball.
This is a cool glitch that I found when I was experimenting. If you want to see how it is done then feel free to look inside. MY 20th PROJECT!