# Vector Maths

parallel vectors is simple addition or subtraction of magnitudes depending on direction. Opposite directions take away!

Composition of perpendicular vectors.

looking at the 2 vectors on the other side we can see they are not parallel vectors.

We can see they have a magnitude and a direction.

How can we write these quantities down and combine them, we know how to draw them from graphical vectors

If we consider the i & j grid then ......

the blue vector might be represented by ___________

the green vector might be represented by ___________

5i + 10j

= the resultant magnitude and direction of the 2 vectors

You may notice that this example only had vectors that went parallel to the axis, but not the same axis, so we only had to combine the i side with the j side.  Copy out the vectors above accurately on to graph paper

(you should choose to spread them out across the page)

Label each of the vectors with a name,

(some are named above)

Also label them in terms of i & j vectors

When adding non parallel vectors, we combine the i values with the other i values, and the j values are added seperatly

Resolution of co-planar vectors.

AN OLD PC MOUSE!

http://physics.info/vector-components/