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Rearranging acceleration equations

  1. Sep 8, 2009 #1
    Starting from the constant-acceleration kinematic equations, write a formula that gives t in terms of xi, xf, vi, and vf.
    do i solve for acceleration in a equation and then plug it in?




    Starting from the constant-acceleration kinematic equations, write a formula that gives vf in terms of t, xi, xf, and a.

    Do i solve one of the kinematic equations for Vi then plug that into another equation? i just dont know what equations and if thats right.
     
  2. jcsd
  3. Sep 8, 2009 #2

    rl.bhat

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    First of all write down all the kinematic equations.
     
  4. Sep 8, 2009 #3
    V = Vo + at

    X - Xo = Vot + .5at2

    v2 = vo2 + 2a(X - Xo)

    X - Xo = .5(Vo + V)t
     
  5. Sep 8, 2009 #4

    rl.bhat

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    The last equation can give you the time t in terms of xi. xf, vi and vf.
    Similarly in the second equation putting vi = vf - at, and rearranging you can get vf in terms of xi, xf, a and t.
     
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