Question

what is refrence frame in physics?

Answer 1

it is more like a coordinate system,such as positions and orientation at different moments of time, but the coordinate are not specific, but it would have the same shape

Answer 2

basically helps you tells the difference from things that are at rest from moving

Answer 3

thank you :)

Answer 4

A reference frame is a set of fixed points relative to which you describe a motion.

A coordinate system is something different, in that is can be fixed or not relative to the reference frame you are using.