A frame of reference that is accelerated with respect to an inertial frame of reference is

Define inertial frame of reference.

Non-inertial frame of reference have

Statement I: A concept of pseudo force is valid both for inertial as well as non-inertial frame of reference. Statement II: A frame accelerated with respect to an inertial frame is a non-inertial frame.

What is frame of reference ?

Frame OF References

Earth is a rotating frame of reference, even then it is considered as inertial frame of reference for all practical purposes. Why ?