10. Conservation of Energy

When is $U=mgh$ (gravitational potential energy) transformed into $K=\frac{1}{2}m{v}^2$ (kinetic energy)?

What happens to the $\mathrm{gravitational} \mathrm{potential} \mathrm{energy}$ of an object as it moves up a pyramid?

Which object has the most $\mathrm{gravitational} \mathrm{potential} \mathrm{energy}$?