Physics of Billiards

When you hit  a ball in Billiards everything matters. If you want to hit the ball perfectly you would need to find the "sweet spot" of the ball.When you hit the ball it is hard enough to hit the other ball into the hole.
The stick you use doesnt matter. What matters is how hard you hit it and where on the ball you hit it and the way you hit it. Many things matter on how you hit the ball. Collision also matter in billiards, you don't always need to power hit one ball. You can also hit in a ball with another ball. Depending on the way you hit the ball matters if it get into the hole or not. This entire process is elastic collision.