Change of gravitational potential energy

[jcamaross]

Homework Statement

An ATV(all terrain Vehicle) of 2000kg mass moves up a 15 degree slope at constant speed os 6m/s. What is the rate of change of gravitational potential energy with time. note power= change of U/change t

a 5.25 kw
b 24.8 kw
c 30.4kw
d 118 kw

Homework Equations

The Attempt at a Solution

no idea

 

[Liquidxlax]

well you know your potential energy equation i'd hope

just in case

U=mgh where m is the mass g is gravity h is height and U is potential

the change in potential is one potential minus another.

what height do you start at, what is your potential at a new height and how long did it take to get there.


oh yeah and kinetic energy is k=.5mv^2

use K=.5mv^2 and U=mgh with a little trig and you golden

 

[jcamaross]

thanks a lot

 

[jcamaross]

i still have no idea!