Question

A typical fast food meal consists of a burger, fries, and a soft-drink and contains 58.0 grams of fat, 39.0 grams of protein, and 177 grams of carbohydrate. If jogging burns 950.0 kJ/hour, how many minutes would it take to completely burn off the meal? The respective fuel values for protein, fat, and carbohydrate are 17, 38, and 17 kJ/g, respectively.

Answer 1

Answer:

371.12 minutes would it take to completely burn off the meal.

Explanation:

Amount of fat in the food = 58.0 g

The respective fuel values for fat = 38 kJ/g

Amount of protein = 39.0 g

The respective fuel values for protein = 17 kJ/g

Amount of carbohydrates in the food = 177 g

The respective fuel values for carbohydrates = 17 kJ/g

Total energy derived from the meal = Q

$Q=58.0 g\times 38 kJ/g+39.0 g\times 17 kJ/g+177 g\times 17 kJ/g$

Q = 5876 kJ

Energy used while jogging for 1 hour = 950.0 kJ

Energy used while jogging for 60 minutes = 950.0 kJ

Let the time require to burn 5876 kJ of energy be t.

So, $\frac{950.0 kJ}{60 min}=\frac{5876 kJ}{t}$

$\frac{5876 kJ\times 60 min}{950.0 kJ}=371.12 min$

371.12 minutes would it take to completely burn off the meal.