Reference frames

[mr newtein]

Main Question or Discussion Point

a frame of reference is moving with a constant velocity with respect to a inertial frame of reference,then moving frame will be inertial itself?

 

[JHamm]

Yes, can you show why? Try beginning by showing that if an object is moving with constant velocity $\vec{v}$ in the first frame then it will also move with a constant velocity in the second.