A 750N person walks up three flights of stairs, covering atoal vertical distance

Question

A 750N person walks up three flights of stairs, covering atoal vertical distance of 11.0m. a) if as is typical, only 20.0% of the caloric (food) energyis converted to work by the muscles, how many joules and foodcalories of energy did the person use? ( one ofod calorie 4186J) b) what happened to the other 80% of the food energy?    please explain A 750N person walks up three flights of stairs, covering atoal vertical distance of 11.0m. a) if as is typical, only 20.0% of the caloric (food) energyis converted to work by the muscles, how many joules and foodcalories of energy did the person use? ( one ofod calorie 4186J) b) what happened to the other 80% of the food energy?    please explain

Explanation / Answer

given weight of the person F = 750N distance moved S = 11.0m a) the amount of energy that does work is given as           20% ofenergy = Work           20% ofE = W            E= W /0.2              = F.S /0.2              = (750N)(11m) /0.2               = 41250 J in food calories is = 41250 J / 4186 J                             =9.854                            = 10 food calories b) The other 80% of the energy is converted into otherforms of energy .

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