Vectors

What is a vector?

A quantity that has magnitude and direction

What are the different fonts vectors are written in?

Bold print and underlined

What type of vector is this?

Column vectors

What are unit vectors?

When we use the components i and j

What does the unit vector i mean?

i = 1 right

1

0

What does the unit vector j mean?

j= 1 up

0

1

Where do position vectors always start?

At the origin

For position vectors, what are the coordinates the same as?

The coefficients of i and j

When calculating vectors in parallelograms, what do you usually need to consider?

Equal vectors

Negative vectors

How would you represent the magnitude of vector **a** ?

**I** a **I**

What formula do we tend to use to calculate the magnitude of vectors?

Pythagoras theorem

How would we find the distance between two points with vectors?

Use position vectors

And then calculate magnitude- Pythagoras theorem

Modelling with vectors recap

Example 19

Example 20 a,b

Example 20 c,d

What is the magnitude of the velocity vector?

Speed

Summary of key points