1. The problem statement, all variables and given/known data A 1 kg box begins at rest and a hand applies a constant force of 2N along a 2 meter board. The first meter is frictionless, but the second meter has friction that makes the box come to a stop. Time is not give. Coefficient of friction is not given. My question is, is it possible to find acceleration at the 2nd meter and/or the coefficient of friction? 2. Relevant equations $F=ma F(f)=uF(n) u= Coef. of friction 3. The attempt at a solution $F= 2N-F(f) =(1kg)(a) 2N-u(9.8N)=1kg(a) I get stuck with two variables.