Question

What is displacement?

Answer 1

If an object moves relative to a reference frame—for example, if a professor moves to the right relative to a whiteboard, or a passenger moves toward the rear of an airplane—then the object’s position changes. This change in position is known as displacement. The word displacement implies that an object has moved, or has been displaced.
Displacement is a vector. This means it has a direction as well as a magnitude and is represented visually as an arrow that points from the initial position to the final position.
A passenger in a bus had a initial position of x1 = 3m and a final position of x2 = 6m what is his displacement?
displacement = x2 - x1 = 6 - 3 = 3m