Question

what is frame of reference

Answer 1

HEY YOUR ANSWER IS HERE. ...
An observational frame (such as an inertial frame or non-inertial frame of reference) is a physical concept related to state of motion. A coordinate system is a mathematical concept, amounting to a choice of language used to describe observations.
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Answer 2

HEY MATE HERE IS YOUR ANSWER:-

The fixed point or place with respect to which the position, velocity, acceleration etc. of a body or an object is measured is known as frame of reference.

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