5.2 A body of mass 2 kg initially at rest moves under the action of an applied horizontal force of 7 N on a table with coefficient of kinetic friction =0.1. Compute the
(a) work done by the applied force in 10 s ,
(b) work done by friction in 10 s ,
(c) work done by the net force on the body in 10 s ,
(d) change in kinetic energy of the body in 10 s ,
and interpret your results.