A stone with a mass of 8.2 kg is initially at rest on a
rough surface. The coefficient of static friction between the stone and the
surface is 0.70, and the coefficient of kinetic friction between the stone and
the surface is 0.60. A force is applied to the stone parallel to the surface
that negligibly exceeds the force required to make the stone move across the
surface. What is the magnitude of the acceleration of the stone across the surface?