A block of mass 2.0 kg kept at rest on an inclined plane of inclination 37° is pulled up the plane

A block of mass 2.
0 kg kept at rest on an inclined plane
of inclination 37° is pulled up the plane by applying a
constant force of 20 N parallel to the incline. The force
acts for one second. (a) Show that the work done by the
applied force does not exceed 40 J. (b) Find the work
done by the force of gravity in that one second if the
work done by the applied force is 40 J. (c) Find the
kinetic energy of the block at the instant the force ceases
to act. Take g = 10 m/s 2
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