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?
Physical Science - bobpursley, Wednesday, November 19, 2008 at 8:34pm
faster, more power ( power=work/time)
same height , same work (work=mgh)
Physical Science - Emma, Monday, December 5, 2011 at 6:34pm
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.