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I really need some help with my homwework.

  1. Sep 3, 2008 #1
    1. The problem statement, all variables and given/known data

    We are doing homework on webassign, and the first set was easy, but I am completly lost this time.

    You are driving your car along a country road at a speed of 26.5 m/s. As you come over the crest of a hill, you notice a farm tractor 25 m ahead of you on the road, moving in the same direction as you at a speed of 12.0 m/s. You immediately slam on your brakes and slow down with a constant acceleration of magnitude 10 m/s2.
    (a) Will you hit the tractor before you stop?

    (b) How far will you travel before you stop or collide with the tractor?

    (c) If you stop, how far is the tractor in front of you when you finally stop? (If you instead collide, enter 0 below.)

    2. Relevant equations

    x=Vot+ 1/2 at (squared)
    v(squared)= Vo(Squared) + 2ax

    I have a couple problems other than this i don't understand.

    3. The attempt at a solution

    i know it wont hit the tractor, but I am lost from there.

    Ive tried using all the equations my teacher gave us, but the website still says its the wrong answer, i dont know what im doing wrong.
    Last edited: Sep 3, 2008
  2. jcsd
  3. Sep 3, 2008 #2


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