[" A rigid body of mass "2kg" initially at rest moves under "],[" the action of an applied horizontal force "7N" on a table "],[" with coefficient of kinetic friction "=0.1." Calculate the "],[" (a) work done by the applied force on the body in "10s" ."],[" (b) work done by friction on the body in "10s" ."],[" (c) work done by the net force on the body in "10s" ."],[" (d) change in kinetic energy of the body is "10s" ."]