SI unit of displacement is the meter (m)

Displacement is a vector quantity that measures the change in position of an object from its initial position to its final position. It is typically represented by a vector that indicates both the magnitude (distance) and direction of the movement.

In the International System of Units (SI), distance and displacement are both measured in meters (m). However, while distance is a scalar quantity that represents the total length of the path travelled by an object, displacement is a vector quantity that represents the straight-line distance and direction from the initial position to the final position.

​Δx = x_f – x_i

where:

• Δx is the displacement,
• x_f is the final position, and
• x_i​ is the initial position.

This formula represents the change in position from the initial point to the final point. Displacement is a vector quantity, so it has both magnitude and direction. The direction of displacement can be positive, negative, or zero, depending on the direction of motion relative to the chosen reference point.