We're having a case study project in our intro physics class. We can choose from the ff. topics: kinematics, Newton's laws, momentum, energy, gravitation, SHO, waves, and fluid mech. We are to investigate a case of physical phenomena which exhibits the theories we have studied in class. This study is supposed to be more extensive than our laboratory experiments. I've toyed around many topics but everything seems very simple. For instance: calculating the value of g using a simple pendulum, or empirical proof of the relationship between a physical and simple pendulum. I'm desperate for something fun and interesting and not very easy. I have no ideas left on what to do. Please do suggest.