$$U_{x’} = \frac{U_{x} – v}{1 – \frac{U_{x}V}{c^{2}}}$$

, where

U_{x} will be velocity of object in S frame. S’ frame will be moving with velocity v wrt S. U_{x’} will be velocity of object in S’ frame.

$$U_{x’} = \frac{U_{x} – v}{1 – \frac{U_{x}V}{c^{2}}}$$

, where

U_{x} will be velocity of object in S frame. S’ frame will be moving with velocity v wrt S. U_{x’} will be velocity of object in S’ frame.