Q. A slab of mass m1 = 4.3 kg rests on a frictionless floor, and a block of mass m2 = 1.3 kg rests on top of the slab. Between block and slab, the coefficient of static friction is 0.60, and the coefficient of kinetic friction is 0.40. A horizontal force of magnitude 100 N begins to pull directly on the block. In unit-vector notation, what are the resulting accelerations of (a) the block and (b) the slab?