# Answer to Question #25019 in Mechanics | Relativity for Lakiya

Question #25019

How does a vector quantity differ from a scalar quantity?

Expert's answer

In a simple words vector is a mathematical quantity with both a magnitude and direction, and scalar is a quantity which can be described by a single number and has no direction, while vector in 3d space is described by three numbers. Examples of vector quantities: velocity, displacement, force, momentum. Examples of scalar quantities: mass, volume, density, time, length.

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