Question

Normally the rate at which you expend energy
during a brisk walk is 3.5 Calories per minute.
(A Calorie is the common unit of food energy,
equal to 4184.1 Joules.)
How long do you have to walk in order to
produce the same amount of energy as in a
candy bar (approximately 280 Cal)?
Answer in units of min.

please help

Answer 1

Based on the calculations, you would have to walk for 80 minutes to expend the same amount of energy.

Given the following data:

• Rate of energy = 3.5 Calories per minute.

• 1 Calorie = 4184.1 Joules.

• Candy bar energy = 280 Calories.

How to calculate the time.

Mathematically, the rate of energy expended with respect to time is given by this formula:

$Rate = \frac{Energy}{time}$

Making time the subject of formula, we have:

$Time = \frac{Energy}{Rate}$

Substituting the given parameters into the formula, we have;

$Time = \frac{280}{3.5}$

Time = 80 minutes.

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