1. A person running at the pace of 5mph expends 300 kilocalories of energy per hour.

a)Find the power of the runner is exerting while running.

b)Find the total energy exerted by the runner in a 10k run

I got 343.02 kc is that right?

2. It took you 2 hours to drive to Berkeley and back with a total distance of 100 miles traveled

a) Your car gets 34.0 miles per gallon. How much energy have used for this trip?

b) What is the average power consumption for this trip?

c) We know that energy does not vanish ( energy conservation). Where does the energy go ( consumed) after the trip?

Thanks alot