d = 1/2 a t^2 ... 9 = 1/2 * 2 * t^2 ... solve for t
v = a t = 2 * t
A body acceleration uniformly from rest at 2m/s^2 .caculate it velocity after travlling 9m
2 answers
or, in one step,
v^2 = 2ad
v^2 = 2ad