A world-class runner can run long distances at a pace of 10 km/hour. That runner expends 700 kilocalories of energy per hour.

 

a. What is the power (in Watts [W] the runner is exerting while running?

 

 

b. what's the total energy (in Joules [J] exerted by the runner in a 10 km run? 

                                                                                                                                 

c. How many Milky Way (Original Single 52.2g) chocolate bars does the runner need to buy to supply the amount of energy half-marathon (13.1 miles)? (label source for the number of calories in a Milky Way bar)