A 14.0 kilogram block is dragged over a rough, horizontal surface by a 91.0 Newton force acting at 20.0 degree above the horizontal. The block is displaced 5.00 meter, and the coefficient of kinetic friction is 0.300.
(a) Determine the work done on the block by the 91.0 N force?
(b) Determine the work done on the block by normal force.
(c) Determine the work done on the block by the gravitational force?
(d) Find increase in internal energy of the block-surface system due to friction?
(e) Determine the total change in the block kinetic energy?