physics please help
posted by taylor .
the floors in a typical house are separated by a vertical distance of approximately 8.0 ft. a teenager (1.0x 10^2 lb) climbs the stairs between floors at a steady speed. find the power necessary to accomplish this if the stairs are climbed in (a) 10.0 s and (b) 2.0 s. express the answers in units of horsepower.

a. h.p.=F*d/550t=100*8 / 550*10=0.1455.
b. h.p. = 100*8 / 550*2 = 0.7273.
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