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Math Help - Solving for a variable in a constant acceleration equation

  1. #1
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    Solving for a variable in a constant acceleration equation

    My brother in middle school recently asked me to solve the following physics equation for t:

    d = v_it + \frac{1}{2}at^2

    For some reason my brain is going dead and I can't figure out if this equation is solvable. I've tried to solve it but my algebra is rusty. Do you need a second equation to determine t? Thanks a lot!
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  2. #2
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    You can solve for t by completing the square.

    Can you remember how this goes?
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  3. #3
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    Wow, I'm an idiot. I didn't even realize that it was a quadratic equation. I was just looking at it trying to factor out t. Thanks a lot!
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