A block slides across a table horizontally with an initial velocity $V$. The frictional force $F$ brings it to rest after its Centre of Mass covers distance $S$.
What is the work done by the frictional force?
According to me, it should be zero because the point of contact of the block and table on which friction acts is always at rest.
But common sense tells, the loss in KE is the work done by the frictional force.
Where am I going wrong?