Question 117328
x=vt- 1/2at^2
(1/2)t^2-vt+x = 0

Use the Quadratic formula:

t = [v +- sqrt(v^2 -4*(1/2)x)]/(2*1/2)

t = [v +- sqrt(v^2 - 2x)]

t = v + sqrt(v^2-2x) or t = v- sqrt(v^2-2x)

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Cheers,
Stan H.