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Homework Help: Grade 11 Physics, Need Help

  1. Oct 29, 2012 #1
    1. The problem statement, all variables and given/known data
    Accelerating uniformly at a rate of 0.20m/s^2 from initial velocity of 3.0m/s, how long will it take to travel a distance of 12m


    2. Relevant equations



    3. The attempt at a solution
    Answer is 3.5 seconds
    But I don't know how you get that

    Also another question

    Chris accelerrates his massive SUV from rest at a rate of 4.0m/s^2 for 10s. he then travels at a constant velocity for 12s and finally comes to rest over a displacement of 100m. Determine his total displacement and average velocity,

    Answer is 780m;29m

    Please help!!!!
     
  2. jcsd
  3. Oct 29, 2012 #2
    well do you know the equations for kinematics problems?

    I.e

    x=x_0 + V_0*t + .5at^2
     
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