For saving energy, bicycling and walking are far more efficient means of transportation than is travel by automobile. For example, when riding at 12.5 mi/h, a cyclist uses food energy at a rate of about 430 kcal/habove what he would use if merely sitting still. (In exercise physiology, power is often measured in kcal/h rather than in watts. Here 1 kcal = 1 nutritionist's Calorie = 4186 J.) Walking at 2.90 mi/h requires about220 kcal/h. It is interesting to compare these values with the energy consumption required for travel by car. Gasoline yields about 1.30 x 108 J/gal.(a) Find the fuel economy in equivalent miles per gallon for a person walking.mi/gal(b) Find the fuel economy in equivalent miles per gallon for a person bicycling.mi/gal

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