How would you describe when and why you would have to use the galilean transformation?

Question

How would you describe when and why you would have to use the galilean transformation when dealing with two reference frames with the same constant velocity?

Answer 1

By principle of relativity,there is no such thing as an absolute velocity which means all motions are described with respect to a certain reference system.The galilean transformation is an approximation used to describe an objects motion from a certain inertial reference frame to another reference frame wich we are interested in, provided that it travels at velocity far below the speed of light.