Question

what is physics define s.i unit and give the advantage of s.i units.

Answer 1

physics is study of nature and natural phenomena
A unit is a number, which expresses the ratio of the magnitude of a physical quantity to the magnitude of another of the same kind, which is called a standard.
s I unit is international system of units I. e units Accepted by all over the world
uses ...
they are not variable
they give more precision and accuracy

Answer 2

• Acceleration is the rate of change of velocity per unit time .

• SI unit :- m/s^2