Question

How do I determine vertical jump height from the flight time?

Is there a specific formula I can use?

Answer 1

height = -1/2 gt^2 +vo t sin(a) + ho

if we know the zeroes of this parabola, then halfway between them is the max height

Answer 2

or the formula from the quadratic equation for this vertex is:

vo sin(a)
t = ---------
g