Define work exerted by force.

(N/A) Work is defined as the product of the magnitude of the force applied to an object and the displacement of the object in the direction of the force.
Mathematically,it is expressed as the dot product of the force vector $\vec{F}$ and the displacement vector $\vec{d}$:
$W = \vec{F} \cdot \vec{d} = Fd \cos \theta$
Where:
$W$ is the work done,
$F$ is the magnitude of the force,
$d$ is the magnitude of the displacement,
$\theta$ is the angle between the force vector and the displacement vector.
Work is a scalar quantity and its $SI$ unit is the Joule $(J)$.