Top of the hill

Bottom of the hill

Midway down the hill

Same potential energy at all points

mass x gravity x distance

height x gravity x force

$\frac{force}{dis\tan ce}$

$\frac{force\ x\ dis\tan ce}{gravity}$

$\frac{force}{time\ taken}$

force x distance moved

work done x time taken

$\frac{work\ done\ }{time\ taken}$

mass x gravity

mass x distance

mass x acceleration

$\frac{mass}{dis\tan ce}$

$\frac{input\ power}{output\ power}x\ 100$

$\frac{output\ power}{input\ power}x\ 100$

$input\ power\ x\ output\ power\ x\ 100$

$\frac{output\ power}{input\ power}$