physics
posted by lexie .
A large boulder sits at the top edge of a cliff, this is boulder A. A smaller boulder sits on a ledge half way down the same cliff, this is boulder B. Which boulder has the greatest potential energy, A or B?

PE= mgh
for the top boulder, M is larger, and h is larger than the other bolder.
So which has the greater PE? 
A has greater PE?
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