1. The problem statement, all variables and given/known data Two boxes are sitting side on a frictionless surface. The box on the left has a mass of 11kg and the box on the right has a mass of 17kg. If a 90-N force pushes on the 11-kg box from the left, what is the force exerted on the 17-kg by the 11-kg box? A) 55 N B) 43 N C) 68 N D) 35 N 2. Relevant equations F=ma 3. The attempt at a solution F=MA 90=(11+17)a a= 3.2 m/s^2 Since you have to find out the force exerted by the 11-kg box F=11(3.2) F=35N This was a question on a quiz. All my friends got 55N.