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Homework Help: Finding initial velocity when given only mass and distance

  1. Feb 13, 2012 #1
    1. The problem statement, all variables and given/known data
    A 1.428 kg textbook is kicked 183 centimeters, what is the initial velocity right as it left the foot?

    2. Relevant equations

    fk-ma/W
    Vf^2=Vo^2*2aΔx

    3. The attempt at a solution
    We were given no time, no acceleration, and no force. I'm completely at a loss!
    this is what I have, but I don't think it's correct:
    I found acceleration by applying the rule: 1N is a force that when applied to object with mass of 1kg, produces an acceleration of 1 m/s^2. So i converted the 1.428 kg into 14.0 N, which (hopefully) means the acceleration is 14 m/s^2
    then I used the second equation to solve for initial velocity.

    Now, this could be completely wrong, and I will venture to guess that it is. So if maybe someone could double check the work here, or even possibly come up with a completely different way of solving it..
     
    Last edited: Feb 13, 2012
  2. jcsd
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