# Water falling = how much power?

1. ### Bigdane

14
Water flows over a section of a waterfall at the rate of 3.2 104 kg/s and falls 33 m. How much power is generated by the falling water?
watts

i tried to use the power equation but im just not sure how the numbers relate.

2. ### LowlyPion

5,328
You need to calculate the rate of potential energy delivery which is m*g*h/sec.

3. ### timon

56
use energy:

E$$_{gravitational}$$ before = E$$_{kinetic}$$ after

The gravitational energy of the water is turned into kinetic energy

the amount of power generated is the energy per second.

14
thanks guys