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## Homework Statement

1)A 3.0kg chair at rest is pulled across the floor by a 20N force.If the co-efficient of friction between the floor and chair is 0.25, calculate:

a)the net force on the chair. answer=13N

b)the displacement of the chair after 2.0sm answer=8.4m

## Homework Equations

Fn=m*a Fn=Fa+Ff Fg=m*g Ff=m*FT(flipped for perpendicular)

V2=V1+a*t d=V1t+1/2a*t^2

## The Attempt at a Solution

I cnat get it started like Im lost with what equation to pick.