The magnitude of any quantity is a number that indicates how large or small a measurement of that quantity is in comparison to a given reference value (that reference value is most of the time taken to be zero).
In physics, magnitude is defined simply as “distance or quantity.”
It depicts the absolute or relative direction or size in which an object moves in the sense of motion.
It is used to express the size or scope of something.
In physics, magnitude generally refers to distance or quantity. In comparison to motion, magnitude defines the size of an entity or its speed when moving.