Home/Basic Physics/Newton's laws and forces/Kinetic friction4. Newton's laws and forcesKinetic frictionIn 4. Newton's laws and forcesFormulaCopy LaTeXfk=μkNf_k=\mu_kNfk=μkNTagsphysicsphysics formulaforceslaws of NewtonNewtonDetailKinetic friction is the product of the kinetic friction coefficient and the normal force.Explore the ideaExplore the ideaFound an error? Contact us.Related formulasRelatedStatic friction0≤fs≤μsN0\le f_s\le\mu_sN0≤fs≤μsNOpen formulaOpen in sectionRelatedWork of kinetic frictionWf=−fkdW_f=-f_kdWf=−fkdOpen formulaOpen in section