A horizontal force of magnitude 36.4 N pushes a block of mass3.81 kg across a floor where the coefficient of kinetic friction is0.640.
(a) How much work isdone by that applied force on the block-floor system when the blockslides through a displacement of 3.93 m across the floor?
(b) During thatdisplacement, the thermal energy of the block increases by 37.2 J.What is the increase in thermal energy of the floor?
(c) What is the increase in the kineticenergy of the block?