how can the potential energy of an olympic ski jumper be increased?; the potential energy of an object is; which two types of energy are transported by the same type of wave?; at which position will the roller coaster have the greatest amount of potential energy?; the kinetic and potential energies of an object both always depend on which property?; is it possible for energy to run out or to be created?; what type of energy does a ball have when it rolls down a hill?; what is the speed of an object at rest?