Scalars and Vectors

The two different types of quantities used throughout A Level Physics.


Scalars and Vectors

It is essential that you can distinguish between vector and scalar quantities as well as recalling many examples of each. Remember a vector has magnitude and direction!


2. Adding Vectors

If you wanted to resolve the forces on an object, or find the resultant velocity, then you have to be able to add vectors together. Most of the time the two vectors you combine are at 90 degrees and you must be able to use trigonometry or scale drawing to find the result.


3. Resolving Vectors

If you have a vector acting an an angle it is often useful to consider its components in the x and y direction. By remembering SOHCAHTOA and applying it carefully you can resolve the vector into its separate components.