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Homework Help: Simple algebra \=

  1. Oct 23, 2007 #1
    k so kinematics equations set equal..have to solve..

    so i divided all by t to get

  2. jcsd
  3. Oct 23, 2007 #2
    You can't divide 25m by t and get 25. You should leave the terms as is, move everything over to one side and use the quadratic equation to solve for t.
  4. Oct 23, 2007 #3
    my mistake there is still supposed to be a unit..i just did that to get rid of the one t and make the other one just t instead of t^2
    then if i move everything it will be...
    thats where im stuck

  5. Oct 23, 2007 #4
    No, you have to leave it as it was. Then move everything over and you get

    [tex].5t^2 - 6t + 25 = 0 [/tex]

    Now, use the quadratic equation where a = .5, b = 6 and c = 25 to solve for t. You should get two answers, only one will be correct. It's possible one will be negative, and that one will not work.
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