Question

Answer in brief:

What are derived quantities? Give two examples.

Answer 1

1. The physical quantities which can be obtained by multiplying, dividing, or mathematically combining the fundamental quantities are known as derived quantities.
2. The physical quantities are expressed in terms of fundamental quantities.
3. Examples of derived quantities:

1. $$\begin{gathered} Speed=\frac{dis\tan ce}{time} \\ Speed=m/s \end{gathered}$$
2. $$\begin{gathered} Density=\frac{mass}{volume} \\ Density=kg/m^3 \end{gathered}$$

Here, SI unit of speed is m/s and SI unit for density is kg/m³.