Question

Explain any three fundamental quantities along with their standard units. Mention any one derived quantity which can be formed using any two of these three fundamental quantities.

Answer 1

Three fundamental quantities:
1) Length - measures the distance between two points; unit - metre (m)
2) Mass - amount of matter contained in a body; unit - kilogram (kg)
3) Time - duration between two instances; unit - second (s)

Derived quantity from length and time - speed.
By definition, speed = distance / time
We can say distance is nothing but length.
So speed = length /time
The SI unit of speed is m/s