An athlete has a basal metabolic rate of 70.0 W. As she is working out, her metabolic rate increases by about 600 W. She eats one piece of buttered toast for breakfast, which has 145 Calories. She wants to work off the piece of toast.
-How long will it take if she stays in bed all day?

Question

Quizplus · Accepted Answer

The correct answer is A.The athlete's metabolic rate is 70.0 W + 600 W = 670 W. The energy in the piece of toast is 145 Calories = 145 * 4.184 kJ = 606 kJ. The time it takes to work off the piece of toast is 606 kJ / 670 W = 0.904 hours = 54.2 minutes.

An Athlete Has a Basal Metabolic Rate of 70