posted by katlyn .
A block of mass 2.50 kg is pushed 2.40 m along a frictionless horizontal table by a constant 14.0 N force directed 25.0° below the horizontal.
(a) Determine the work done by the applied force.
(b) Determine the work done by the normal force exerted by the table.
(a) 14.0 cos 25 * 2.40 m = ___ Joules
(b) zero. It is perpendicular to the motion