Which of the following contains the most mechanical energy?

A 10 kg ball at the top of a hill 10 meters high
A 5 kg ball rolling with a velocity of 12 m/s
A 10 kg ball rolling with a velocity of 5 m/s
A 5 kg ball at the top of a hill 10 meters high

HELPS PLEASE!!!!

2 answers

PE = m g h
KE=1/2 m v^2

you can calculate these.
couldn't u please show me the calculations? that is what i'm having a problem with