State the sign of work done by a force in the following .
work done by an applied force on a body moving on a rough horizontal plane with uniform velocity .

Explanation

Workdone `W = vec(F)* vec(S) = FS cos theta " where " theta ` smaller angle between force `vec(F) ` and displace- ment `vec(S)`
As the body moves along the direction of applied force `theta = 0 W = FS cos 0^(@) = FS` It is positive