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

Answer 1

faster, more power ( power=work/time)

same height , same work (work=mgh)

Answer 2

The one that is fastest has more power, and as for the work, it depends on the mass of each person and the height of the flight of stairs.