Question

what is the average power supplied by a 60.0 kg person running up a flight of stairs a vertical distance of 4.0 in 4.2s

Answer 1

Hi there!

We know that:

$P = \frac{W}{t}$

Where:

W = Work done (J)

t = time (s)

We can calculate the work using the equation:

$W = \Delta U = mg\Delta h$

Plug in the given values:

$W = 60(9.8)(4) = 2352J$

Now, divide by time:

$P = \frac{W}{t} = \frac{2352}{4.2} = \boxed{560W \text{ (Watts)}}$