Initial kinetic energy homework

[lindzpooh]

super lost!

Homework Statement

a moving object whose initial kinetic energy is 20 Joules is subject to a frictional force of 4 N that acts in the opposite directon. how far will the object move before coming to a stop.

Homework Equations

The Attempt at a Solution

 

[Hootenanny]

Oh super...

What is the definition of work?

 

[lindzpooh]

work p=w/t

 

[Heat]

you sure?

P is power, I believe. (I'm not that far in physics yet, but I am in the work section.) :)

Should be something involving these variables: W, F, and s.