Question

An race is held each year to see who can be the first person to climb the 86 floors of the Empire State Building. If a 60.5 kg person runs the race in 12 minutes and 58 seconds , answer the questions below.

If each floor was 3.70 mm high, what was the racer's change in gravitational potential energy? dPE=189 kJ

If the efficiency in climbing stairs is 30 % , what total energy did the racer expend during the race? E.total= 630 kJ

A) How many food Calories did the racer "burn" during the race? Q=? Cal

B) Of those Calories, how many were converted to thermal energy? dE.thermal= ? Cal

C) What was the racer's metabolic power in watts during the race up the stairs? P=? W

Answer 1