Well I have drawn out a FBD and I can see that the 320N give the block a Fnet in the +x direction (since it does have acceleration), but I'm just not sure how I'm supposed to use that 320N in any equation.
Actually that 320N was confusing me, I'm not really sure what I'm supposed to do with it or how it comes into play finding the coefficient of kinetic friction.
Homework Statement
60kg block slides along the top of 100kg block. 60kg block has an acceleration = 3.0m/s^2 while a horizontal force of 320N is applied to it. There is no friction between the 100kg block and the frictionless surface but there is friction between the two block. Find the...