Gravitational ep in a uniform field

[kelly242]

Homework Statement

It is estimated that 3.0 x 10¹⁰ kg of water flow over Niagara falls each hour. The height of the fall is 65 m. What is the total gravitational potential energy of the water relative to the bottom of the falls that falls in one hour. What is the power represented by the water that goes over the falls?

Homework Equations

Ep=mgh
Ek=1/2mv²

The Attempt at a Solution

Ep=mgh
=(3.0 x 10¹⁰ kg)(9.81 m/s2)(65 m)
= 1.91 x 10¹³ J
secong question is what doesn't make sense

 

[lewando]

power = energy / time

A watt is a unit of power and has SI base units of units kg*m²/s³

I think you have all the needed information.