This chapter from Learn GameSalad for iOS
offers tips on learning gravity, basic physics, and camera controls when creating an Angry Birds-like game.
Learn GameSalad for iOS: Game Development for iPhone, iPad, and HTML5 ISBN13:
July 2012 Author:
David Guerineau Chapter:
"Learning Gravity, Basic Physics, and Camera Controls: An Angry Birds-like Game, Part I" Publisher: Apress