Question

Rewrite A=fd+1/2at for a freely fall body

Answer 1

A = S = displacement
let f = u = initial velocity
d = t = time
acceleration = a = g

S = -ut - 1/2gt²

here -u because it going down i.e negative 'y' axis and 'g(acceleration due to
gravity) is always acting on negative'y'axis i.e downward.