These equations describe relation between initial velocity (u), final velocity (v), displacement(s), time (t) and acceleration (a), for uniformly accelerated motion.
v = u+at
s= ut+ at2
v 2- u2 =2as
Distance traveled in nth second (Sn) is the distance traveled in one second between t = n and t = n-1 seconds
Sn=u + (2n-1)