gravitational potential and kinetic energy

[oli_collins]

does any one know where i can find out about What the future usage of gravitational potential and kinetic energy is. this is very ergent so if you know can you please write back within the next day.

[russ_watters]

Future uses? I'm not sure I understand. Gravitational potential energy is used all the time (you wouldn't really describe kinetic energy as "gravitational kinetic energy"). See the roller coaster thread...