Help Isolate Time in this equation.

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To isolate Δt in the equation Δd = Vi Δt + 1/2 aav Δt^2, it is recognized that Δd represents displacement, and aav can be simplified to 'a'. The equation is identified as a quadratic in terms of Δt. Completing the square or applying the quadratic formula are suggested methods to solve for Δt. Both approaches will yield the same result in isolating the variable.
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Δd= Vi Δt + 1/2 aav Δt^2

I need to isolate Δt

The Δd is displacement not distance
 
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I think aav would just be 'a' right?

Well what you have on the right side is a quadratic equation, so try to complete the square.
 
(or use the standard -b ±√etc quadratic equation formula … same result :wink:)
 
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