Work Power & Energy

Namaskar students, in this video we are working on the basic concept of work. In starting , the work has been defined, how the change of kinetic energy is derived from the equation of motion, the work has been defined, after that, when does the work become zero, when is it non-zero, when is it negative all things are discussed? . Finally the work has been calculated with the help of a numerical in which the concept of displacement and constant work is discussed.
Thank You.