Two blocks with masses m$1$ $=1\mathrm{.}30$ kg and m$2$$=3\mathrm{.}20$ kg are connected by a massless string. They are released from rest. The coefficent of kinetic friction between the upper block and the surface is $0\mathrm{.}160.$ Assume that the pulley has a negligible mass and is frictionless, and calculate the speed of the blocks after they have moved a distance $56\mathrm{.}0$ cm$.$