Definition:Displacement

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Definition

The (physical) displacement of a body is a measure of its position relative to a given point of reference in a particular frame of reference.


Displacement is a vector quantity, so it specifies a magnitude and direction from the point of reference.


In Cartesian coordinates, the direction is implicit, as it occurs as a result of the combined distances from the various axes of the frame of reference.


Dimension

The dimension of displacement is length $L$.


Units

SI

The SI unit of displacement is the metre.


CGS

The CGS unit of displacement is the centimetre $\mathrm {cm}$.


FPS

The FPS unit of displacement is the foot $\mathrm f$.


Also known as

The displacement of a body is also known as its position vector.


Sources