1. The problem statement, all variables and given/known data An object experiences a friction force, Ff, of 6.6 N and a normal force, Fn, of 30.0 N. a) What is the coefficient of friction, μ? b) Is the object moving? How do you know? 2. Relevant equations μ = Ff / Fn 3. The attempt at a solution I understand how to get the answer for a) which is 0.22: μ = Ff / Fn μ = 6.6 / 30.0 As for b) though, I don't know if I'm overthinking it or something, but I think there aren't enough given variables to answer the question. The textbook points out that the question is K/U (in other words, it should be easy) but I can't figure it out. Thanks in advance.