Adding Vectors


A vector is a quantity which has both size and direction.

For example:
  • 25 km West
  • 180 Newtons up
  • 90 km/h right
  • 35 m at an angle of 17 degrees from horizontal

A vector can be represented by an arrow.


The length of the arrow shows the size of the vector.

The angle of the arrow shows the vector's direction.


Vectors can be added several ways. 'Adding the vectors' means showing the sum vector, and finding its size and direction.

You can show the sum vector:



You can find the sum by:


Mr. Willis' Page