# Distance travelled of block, friction, forces

1. Nov 11, 2013

### johnnnnyyy

1. The problem statement, all variables and given/known data
A block of mass 1kg has a coefficient of static friction of .5. If a 7N force is applied to the block what distance can the block travel? Coefficient of kinetic friction is .3

2. Relevant equations
F=ma

3. The attempt at a solution
I found the static frictional force to be (.5)(9.8)(1)=4.9N so the Fnet of the initial force applied is 2.1N. However I do not know how to find the distance the block travelled from there? Anybody know how to do this?

2. Nov 11, 2013

You know the Coefficient of kinetic friction.Thats what you need here.

3. Nov 11, 2013

### johnnnnyyy

I know that I need to use kinetic friction but I don't how to use it with what I am giving. I think I might need to find velocity but how could I find that?

4. Nov 11, 2013

(you may redefine the question with "If a 7N force is applied to the block what distance can the block travel?,Until coming to a stop.
I think your question needs to be a bit clear.

Last edited: Nov 11, 2013
5. Nov 11, 2013

### johnnnnyyy

Using V^2=u^2+2as, I know that V will be 0, a will be 2.94 and s is the distance which am trying to find, I just don't know how to find u.

6. Nov 12, 2013