Question

Anna walks up the stairs on her way to class. She weighs 565 Newtons, and the stairs go up 325 meters vertically. What is Anna's power output if she gets to the top of the stairs in 12.6 seconds?

Answer 1

`P=(Delta W)/(Delta t)`

Explanation:

`Delta W =F_g * Delta h`

`P=(F_g * Delta h)/(Delta t)=`
`=(565" N"* 325 " m")/(12.6 " s")=14.6 " kW"`