A particle moving in a straight line starts with a velocity u. Its retardation at any instant is proporional to the displacement. Find its displacement before coming to rest, if retardation at unit displacement is mu.

A particle moving in a straight line starts with a velocity u. Its ret

1.	A particle moving in a straight line starts with a velocity u. Its retardation at any instant is proporional to the displacement. Find its displacement before coming to rest, if retardation at unit displacement is mu.
Answer» `S = PM (U)/(sqrt(mu))` `S = pm (2U)/(sqrt(mu))` `S = pm (u)/(2 mu)` `S = pm (mu)/(u)` ANSWER :A