Hi there!
Recall the following relationships:
[tex]W = \Delta U = mg\Delta h\\\\P = \frac{W}{t}[/tex]
W = Work (J)
U = Potential Energy (J)
m = mass (kg)
g = acceleration due to gravity (9.8 m/s²)
h = height (m)
t = time (s)
Begin by calculating the work:
[tex]W = 50(10)(8) = 4000 J[/tex]
Now, divide by the time to solve for power:
[tex]P = \frac{4000}{5} = \boxed{800W}[/tex]
**W is the unit for power (Watts). Be careful not to get the two confused.
