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physics please help!

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Find the velocity (in m/s) of a free-falling object released from rest after it has fallen 100m. I don't understand the formulas to use or anything. please help.

  • physics please help! -

    A handy equation for an object with 0 initial velocity and constant acceleration is:

    v^2 = (2*a*s)
    v = final velocity
    a = acceleration (in this problem it is gravity)
    s = distance

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