(i) Base quantities

A base quantities is a quantity that cannot be expressed in terms of other quantities.

It is very important that you are able to recognise the units correctly. For instance, the new- ton (N) is another name for the kilogram metre per second squared (, while the kilogram metre squared per second squared ( is called the joule (J).

Lesson review :

- Explain what base quantities and derived quantities are.
- list 5 base quantities and their units
- list 5 derived quantities and their units.

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