If an athlete expends 3480. kJ/h, how long does she have to play to work off 1.00 lb of body fat? Note that the nutritional calorie (Calorie

Question

If an athlete expends 3480. 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.

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Helga 4 years 2021-08-21T21:17:30+00:00 1 Answers 20 views 0

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  1. Euphemia
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    2021-08-21T21:18:34+00:00
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    Answer:

    The time required by the Athlete to work off 1.00 lb of body fat = 0.296 minute

    Explanation:

    1 lb of body fat = 4.1 k cal

    1 k cal = 4.184 Kilo joule

    1 lb of body fat = 4.1 × 4.184 = 17.1544 Kilo joule

    Athlete expends 3480 Kilo joule in one hour

    ⇒ Time required to expand 3480 Kilo joule  = 60 minute

    ⇒ Time required to expand 1 Kilo joule = \frac{60}{3480} \frac{min}{KJ}

    ⇒ Time required to expand 17.1544 Kilo joule = \frac{60}{3480} × 17.1544 = 0.296 min

    Therefore the time required by the Athlete to work off 1.00 lb of body fat = 0.296 minute

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