Scalar quantity
A scalar quantity is a measurement which has a magnitude only.
Magnitude is the size of the quantity - usually the number.
Examples of scalar quantities
Section titled “Examples of scalar quantities”- Length
- Distance
- Speed
- Temperature
- Charge
- Voltages (e.g. potential difference)
- Energy
Adding scalars
Section titled “Adding scalars”To add two scalars together, we just… add the scalars together.
For example:
Subtracting scalars
Section titled “Subtracting scalars”It works the same way as adding them: