Q. What do you mean by frame of reference? what are Inertial and Non-inertial frame of references? Explain with examples.

Frame of Reference : A system relative to which the motion of any object in discribed is called frame of reference or reference frame.
- The frame with respect to which unaccelerated body is unaccelerated.
- The frame with respect to which an unaccelerated body is accelerated.
Ineretial frame of reference : The reference frame which is addresed or moving with uniform velocity with respect to a fixed frame is called an inertial reference frame. So inertial frame is unaccelerated or non-rotetory.
Ex- Abody moving the road with contant velocity, then the road for this body act as inertial reference frame.
Non-Inertial frame of reference : Areference frame which is accelerated or rotetory is called as non-inertial frame of reference frame.
Ex- A reference frame attached to the aircraft which is make in as takeoff.