If an athlete expends 2965 kJ/h, how long does she have to play to work off 1.00 lb of body fat? Note that the nutritional calorie (Calorie) is equivalent to 1 kcal, and one pound of body fat is equivalent to about 4.10 × 103 Calories.

hours?

To answer this problem first we convert 2965 kJ/h to kcal, and then we convert that value into nutritional calories per hour ( Calories/h), as follows:

1 kJ = 0.239 kcal, we know this from conversion tables

2965 kJ/h * [tex]\frac{0.239kcal}{1kJ}*\frac{1Calorie}{1kcal} =[/tex] 708.635 Calories/h

Then we divide 4.10 x 10³ Calories by that value, in order to calculate how many hours it would take to burn off that many Calories (which are equal to 1.00 lb of body fat):

4.10 x 10³ Calories ÷ (708.635 Calories/h) = 5.78 h

If an athlete expends 2965 kJ/h, how long does she have to play to work off 1.00 lb of body fat? Note that the nutritional calorie (Calorie) is equivalent to 1 kcal, and one pound of body fat is equivalent to about 4.10 × 103 Calories. hours?

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If an athlete expends 2965 kJ/h, how long does she have to play to work off 1.00 lb of body fat? Note that the nutritional calorie (Calorie) is equivalent to 1 kcal, and one pound of body fat is equivalent to about 4.10 × 103 Calories.

hours?