Originally Posted by Eric Jones
Any of you here race cars?
Auto racing around a circuit (screw NASCAR) is all about taking the right line through corners to manage momentum and acceleration. The fastest line is the one that allows you to stay on the gas longer and break later, you can't just go in a straight line from corner to corner.
Sorry if this is random, but the parallels are cool.
That's basically how you see if a physics student really understands centripetal force and centripetal acceleration. If they can explain that, and also why (using physics) banking the track in the curves is beneficial, they got it.