need urgent helllllp! im in year 12 at the moment and our new physics teacher has set us an assignment. it is very deceptively simple he informs us. it reads: does a marble at the top of a ramp convert all of its potential energy up the top, into kinetic energy at the bottom of the ramp.....or something along those lines. he has given us a hint by telling us "predictions". he says we can either do simple calculations and get 50% or find out what he wants from this and achieve an awesome result. i cant seem to see what he wants us to find out so anyone's help would be greatly appreciated??? he has given us a ramp and a marble.... im stuck pleeeeease help! amber.