Discover how to calculate the modulus (magnitude) of a velocity vector! This tutorial explains how to find the speed of an object from its velocity components in both 2D and 3D motion. Perfect for ...

Revise how to calculate the magnitude of a vector using the vector components as part of National 5 Maths. Back to top. More on Quizzes - National 5 Maths. Find out more by working through a topic.

If you wanted, you could find the magnitude of this vector displacement with a value of 3.61 meters. You could also find the "direction" of this vector and say that it is 33.7° below the x-axis.

The magnitude of a vector has to be a positive number. To really use these, you need unit vectors. This is what they look like: The little ^ over the x means that it is a unit vector.