A force of $80N$ acts on a body, causing it to move 8m on a horizontal surface. What is the work done if the force direction is at a $90°$ angle to the horizontal surface?

A force is said to do work when it causes the body to move a certain distance in the direction of the applied force.

Because the body is being displaced in the direction of F, the force's work in displacing the body over a distance s is given by

According to the question given that, Force$\left(F\right)=80\mathrm{N}$, distance $\left(S\right)=8m$ and $\theta ={90}^o$

The mathematical expression for work done is

$W=Fs \cos \theta$

$\Rightarrow W=80\times 8\times \cos 90° [\cos 90°=0] = W=0J$