Question

A force of $10N$ is applied along $x-$axis calculate amount of work done to displace body from $(2,3)$ to $(-1,4)$.

Answer 1

$F=10N$

$s=\sqrt{(-1-2{)}^2+(4-3{)}^2}$

$=\sqrt{9+1}=\sqrt{10}$

$W=F\times s$

$=10\times \sqrt{10}$

$\therefore W=10\sqrt{10}J$