A 91 kg student eats a 200 Calorie doughnut. To “burn it off”, he decides to climb the steps of a tall building. (1 food Calorie = 10^3 Calories.) How high would he have to climb to expend an equivalent amount of work? The acceleration of gravity is 9.8 m/s2

Answer 1

91 * 9.8 * h = 200,000

h = 224 meters

assuming that a floor is about 3 meters, that is about a 75 story building.