# physical Science

Two people who weigh the same climb a flight of stairs. The first person climbs the stairs in 30 s, while the second person climbs them in 40s. Which person does more work? Which uses more power?

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1. Both do the same amount of work. Power is work/unit of time; therefore, the person who climbs faster exerts more power. Check my thinking.

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2. Two people who weigh the same climb a flight of stairs. The first person climbs the stairs in 30 s, while the second person climbs them in 40s. Which person does more work? Which uses more power?

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