Two cars x and y travelling side by side are subjected to constant retardations 1/2m/s and 1/6m/s.After passing a point A,they come to rest 300m before and 150m beyond a second point B.Find common velocity at A and distance AB

Answer 1

This term "retardations"....

It has units of velocity. Velocity is not a "retardation", see Newtons first law of motion.

I do not know what you are asking.

Answer 2

sorry, I mean m/s^2