Yosemite Falls in California is about 740 m high.
(a) What average power would it take for a 70-kg person to hike up to the top of Yosemite Falls in 1.5 h?
(b) The human body is about 25% efficient at converting chemical energy to mechanical energy. How much chemical energy is used in this hike?
(c) One food Calorie is equal to 4.186 × 103 J. How many Calories of food energy would a person use in this hike?