I am really confused here. I have studied that if the kinetic energy of a moving body is not changing then the net work being done on the object is equal to zero. But when we are talking about a body moving upwards at constant velocity there is no change in its kinetic energy but there is still an increase in the g.p.e of the object. How is this possible. What I think is that the energy transferred by the positive work we are doing on the object is converted and stored as g.p.e by the negative work being done by gravity on the object. Please!! someone correct me if I am wrong here.