## 1.2.2 Derived Quantities

- A derived quantity is a Physics quantity that is not a base quantity. It is the quantities which derived from the base quantities through multiplying and/or dividing them.
- For example, speed is define as rate of change of distance, Mathematically, we write this as Speed = Distance/Time. Both distance and time are base quantities, whereas speed is a derived quantity as it is derived from distance and time through division.
**Example**(Speed is derived from dividing distance by time.) - Belows are the derived quantities that you need to know in SPM. You need to know the equation of all the quantities, so that you can derive their unit from the equation.
- If you find it difficult to memorise all these equation, you can skip it now because you are going to learn all of them in the other chapter.