A typical jogger burns up food energy at the rate of about 43 kJ per minute. How long would it take to run off a piece of cake if it contains 435 Calories?
1 Ñ = 4.184 J
435 C = 1820.04 J
1820,04/43000= 0.042 min = 2.54 s.
48.4
To find out how long it would take to run off a piece of cake, we need to convert the calories in the cake to kilojoules, and then divide that by the rate at which a typical jogger burns energy.
First, let's convert the calories in the cake to kilojoules. One calorie is equal to 4.184 kilojoules, so we can calculate the kilojoules by multiplying the number of calories by 4.184.
435 Calories * 4.184 kJ/cal = 1817.04 kJ
Now that we have the amount of energy in kilojoules, we can calculate the time it would take to burn it off. We divide the energy content in kilojoules by the rate at which a jogger burns energy.
1817.04 kJ / 43 kJ/min = 42.28 min
Therefore, it would take approximately 42.28 minutes to run off a piece of cake that contains 435 calories.