Monte works at the local grain elevator during the summer months. He usees the lift to hoist 135.1-Newton sack of grain to a storage area 24.7 meters above the ground.

1. What is the potential energy of the sack when in the storage room?
2. How much work was done in lifting the sack to this height?
3. If the sacks were to fall back down to the elevator floor, how much Kinetic energy would it have prior to landing?