Answer :
The displacement after 40 s will be 3.24km.
In mechanics, displacement refers to the distance travelled by a particle or body moving in one direction. Generally, point masses are used to describe particles and bodies. This means that, without sacrificing generality, bodies can be thought of as having all of their mass concentrated in a single mathematical point.
The point's journey distance depends on the path it takes; it will only match the displacement's size if the path is straight. In mechanics, it is commonly required to make the distinction between a point's displacement and the distance over which it travels or a force acts. Because displacement has both a magnitude and a direction, it is a vector quantity.
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