One watt is 1 joule per second. The woman in the preceding example expends 8.4 kilojoules per hour per kilogram of body mass while walking. (a) How many watts per kilogram does she use? (b) If her mass is 50 kg, how many watts does she expend?

University Physics Volume 1
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Author:William Moebs, Samuel J. Ling, Jeff Sanny
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Chapter8: Potential Energy And Conservation Of Energy
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One watt is 1 joule per second. The woman in the preceding example expends 8.4 kilojoules per hour per kilogram of body mass while walking. (a) How many watts per kilogram does she use? (b) If her mass is 50 kg, how many watts does she expend?

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