Nice little physics game
I liked it, i mean its nothing special but it kept me busy for a few minutes, If you ever plan on doing this again i think there should be some menu options to make it alittle more interesting, like say adding balls to the screen (really easy to do). or having the balls interact with each other, you could do something as easy as making them bounce off each other(also really easy) or give them different masses which a user could set and have them pull eachother, like gravity (fairly difficult but do-able).