Gey who weighs 500 newtons is late for class. it takes her 7.5 seconds to run up two flights of stairs, a total of 8 meters. how much power does gerry expend inher run upstairs?…

Question

asked Jan 2, 2020 55.2k views

1 Answer

Shaneburgess · Answer 1 · 2020-01-06T09:58:24+0000

Step-by-step explanation:

Power is the ratio of work to time.

Work is the product of force and displacement.

Work = Force x Displacement

W = F x s

W = 500 x 8 = 4000 J

$\texttt{Power = }\frac{\texttt{Work}}{\texttt{Time}}\\\\\texttt{Power = }(4000)/(7.5)\\\\\texttt{Power = }533.33W$

Power expended by Gerry expend in her running upstairs is 533.33 Hz