1. A cat that weighs 6 kg falls asleep and rolls off the top of a refrigerator. He has 86 Joules of kinetic energy as he lands on the floor. How tall is the refrigerator?
m (nearest hundredth)
2. A 10 kg cannonball is fired straight up in the air with 560 Joules of kinetic energy. How high will the cannonball go?
