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Homework Help: Computing veloctiy

  1. May 17, 2009 #1
    1. The problem statement, all variables and given/known data
    "A hot-wheels car of mass 0.0250 kg is traveling on a horizontal track with a velocity of 5.00m/s. If the track suddenly turns upward, how high up the track can the car travel?"

    2. Relevant equations
    work = mgh = force * distance
    PEf + KEf = PEi + KEi
    KE = .5mv^2

    3. The attempt at a solution

    I know that I need to find the distance, so I solve the work equation so it looks like (mgh)/force = distance. However, this is where I'm stuck. What would I use for the height of the ramp? Also, what would I use for the acceleration (I currently have F = ma in the equation, so the masses cancel and what's left is (gh)/a)? Would I use gravity?
  2. jcsd
  3. May 17, 2009 #2


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    Homework Helper

    I would suggest that you focus on the conversion of Kinetic energy to gravitational potential energy.
  4. May 17, 2009 #3
    Ahhh, i got it now. Thanks LowlyPion
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