Define work. Write an expression for work in terms of force and displacement. State the $SI$ unit of work done.

(N/A) Work is defined as the product of the magnitude of the force applied on an object and the displacement of the object in the direction of the force.
The expression for work done $(W)$ is given by:
$W = F \times s$
Where $F$ is the force applied and $s$ is the displacement.
The $SI$ unit of work done is the joule $(J)$,where $1 \ J = 1 \ N \cdot m$.