The Zero Vector Here's the real problem with the "magnitude and direction" definition of a vector---the zero vector. Suppose you want to represent a displacement in 2 dimensions.

Dealing with Vectors Vector Components Any vector can be expressed as a sum of a number of other vectors. The vectors which are summed are called the components of the original vector. When you want ...

This arrow represents a vector. The direction is given by the arrow, while the length of the line represents the magnitude. The vector components are (3 4) ...