Suppose that the average U.S. household uses 10600 kWh (kilowatt-hours) of energy in a year. If the average rate of energy consumed by the house was instead diverted to lift a 1.80 x 10 kg car 15.8 m into the air, how long would it take?
car: _____ s

Using the same rate of energy consumption, how long would it take to lift a loaded Boeing 747 airplane, with a mass of 3.95 x 10 kg, to a cruising altitude of 9.17 km?
airplane: _____ s