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Homework Help: Equation Help

  1. Nov 12, 2007 #1
    What equation do I use to find the initial velocity of an object?
  2. jcsd
  3. Nov 12, 2007 #2
    You can use Velocity = Initial Velocity + Acceleration*Time

    V=Vi + at
  4. Nov 13, 2007 #3
    Or s = ut + 0.5at^2

    or v^2 = u^2 + 2as

    it depends on what you know already.
  5. Nov 13, 2007 #4
    There is no equation "to find the initial velocity of an object".
  6. Nov 13, 2007 #5
    Sorry -- that was a bit hasty. I guess there could be a problem that gave you final conditions and asked you to work backward to the initial conditions. As tyco05 said the equations you would use to do that would depend on what you already know so there is no equation in general "to find the initial velocity of an object".
  7. Nov 13, 2007 #6
    Thank you!!!!
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