A 715 N person walks up three flights of stairs, covering a total vertical distance of 10.5 m.
(a) If, as is typical, only 20% of the caloric (food) energy is converted to work by the muscles, how many joules and food calories of energy did the person use? (One food calorie = 4186 J.)
(b) What happened to the other 80% of the food energy?

Question

A 715 N person walks up three flights of stairs, covering a total vertical distance of 10.5 m.
(a) If, as is typical, only 20% of the caloric (food) energy is converted to work by the muscles, how many joules and food calories of energy did the person use? (One food calorie = 4186 J.)
(b) What happened to the other 80% of the food energy?

nincompoop · Answer

this is a physics question

nincompoop · Answer

show your attempt at solving the problem