Physics

In order to know how to properly code and what angle to repel the ball, you need to at least navigate the physics slightly. But you still do not know all these subtleties. And you want to know. In the game you'll be able to see all of this and try and watching all this, and of course tasting. You acquire vast experience when you come and try to win the game. Taste it go and still learn all the intricacies of science physics.