### Brain Teasers

# Run vs Walk

Since a person uses about the same amount of energy walking for ten kilometers as running for ten kilometers, would a person use more energy running for ten minutes, walking for ten minutes, or is the same amount of energy spent? Why?

### Answer

In the first situation, the measurement was distance so the runner would finish much earlier than the person walking; therefore, the amount of energy spent would be approximately the same. In the second situation, the measurement is time, and a person who runs for ten minutes will cover a much greater distance and therefore burn more energy than a person walking for ten minutes.Hide Answer Show Answer

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