4 A particle \(P\) of mass 0.2 kg lies at rest on a rough horizontal plane. A horizontal force of 1.2 N is applied to \(P\).
- Given that \(P\) is in limiting equilibrium, find the coefficient of friction between \(P\) and the plane.
- Given instead that the coefficient of friction between \(P\) and the plane is 0.3 , find the distance travelled by \(P\) in the third second of its motion.