Assume running consumes 91 Calories per mile. If you run 10​-minute ​miles, what is your average power​ output, in​ watts, during a 1​-hour ​run?

Question

very confused on this problem please help

Answer 1

Assuming the calories per mile are measured in food calories (kilocalories), then in one hour you would run 6 miles and consume 6 x 91 = 546 calories (kcal). One watt is defined as one joule of energy expended per one second. One joule is approximately .000239 kcal. One hour is 3,600 seconds. So, if you expend 546 kcal in one hour, you would divide that by .000239 kcal/J to convert to 2,284,519 J per hour. Divide that by 3,600 seconds/hr to get 634.6 J/s = 634.6 W.