1. The problem statement, all variables and given/known data A construction worker passes a brick to another worker by pushing it across a wooded floor. the brick has a mas of 2.7kg. The force required making the brick move with acceleration of 0.42m/s2 is 28 N. What is the co-efficient of kinetic friction acting on the brick? 3. The attempt at a solution FN=Fg = mass X acceleration =2.7kg X 0.42m/s2 =1.134 N Fkf= μk X FN μk = Fkf [itex]/[/itex] FN = 28N [itex]/[/itex] 1.134N =24.69 I'm pretty sure I got the acceleration part wrong. What am I supposed to do to find the normal force?