Where; s = the displacement of the object, u = its initial velocity, v = its final velocity, a = its acceleration and t = the total time, say of the experiment; all of these while the object has constant acceleration throughout the period.
v = u + a * t
v^2 = u^2 + 2 * a * s
s = ((v-u)/2) * t
s = u * t + (a * t^2)/2
s = v * t - (a * t^2)/2