Physics
posted by myschic on .
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!!!!

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