Question

Tour de France riders consume about 5,200 Calories per day of the race. Calculate a rider’s average power intake in Watts over the 21 days of the Tour. [Power intake is the rate at which the rider consumes energy in the form of food. The actual energy used to propel the rider’s bike, kinetic energy, is less than the energy they eat. There is some energy loss due to inefficiencies in converting between food and usable energy, maintaining body heat, etc. but we ignore this here.](5 points)

Answer 1

The average power intake is 0,252 Watt.

Step-by-step explanation:

1 Calorie = 4,1868 J

5200 Calories = 21771,36 J per day

1 Wat = 1 J/s

Average power intake [Watt] = 21771,36 / 24 / 3600 = 0,252 Watt