after the ap exam, our teacher is making us create our a physics lab touching on one or more of the ap topics (we want to stick to force/kinematics/easier topics). i'm working with another person, and we're having a hard time thinking of a lab that wouldn't be too difficult to set up. (we don't have a lot of equipment.) i had the idea of measuring the frictional force on the pool table top, but we're still looking for other ideas (which aren't too overused/done in class). does anyone know how to go about doing to pool table friction lab, or do you guys have any other ideas?