How do I find the time without velocity?

Question

If d=at2/2 finds the distance but I don't have the time or velocity but I do have the acceleration and distance, would using Squareroot 2d/a=t be the correct equation to use to find time?

d=at2/2 is suppose to be d=at^2/2, but I'm guessing that could go unsaid.

Answer 1

Yes, but your notation still needs correcting; it must be unambiguous if you expect people to follow your problem:

Write d = (1/2) a t^2 or d = (a*t^2)/2

and t = sqrt (2d/a) or t = (2d/a)^(1/2)

Answer 2

d = .5*a*t^2. solve for t: t^2 = 2*d/a, t = √[2*d/a]. You are correct.