Define inertial frame of reference.

Is earth an inertial frame of reference

Define inertial and non-inertial frames of reference with example.

What is meant by a frame of reference ? Does the magnitude of a physical quantity depend on the choice of frame of reference ?

Define native state with reference to protein.

Does the magnitude of a physical quantity depend on the chosen frame of reference?

Statement I: Work done by normal contact force can be non -zero Statement II: Normal contact force is always perpendicular to displacement of object. (Here displacement is measured with respect to frame of reference attached to the two surface in contact. )

In which frame of reference Newton's first law of motion is applicable?