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Direction of Momentum Problem

  1. Apr 25, 2014 #1
    1. The problem statement, all variables and given/known data
    A) You travel north down a road in a car at constant velocity. In which direction (N, S, E, W, up, down) does the angular momentum vector point for one of the tires.

    B) Same situation. If you slam on the brakes in which direction does the angular acceleration vector point for one of the tires. (N, S, E, W, up, down)

    2. Relevant equations

    L = r x p

    3. The attempt at a solution

    For A, I think it's East because of the right hand rule. My fingers would be curling forward and my thumb would be pointing to the Left.

    For B, I'm not sure. I guess it would be West just because acceleration would be negative and in the opposite direction of A.
     
  2. jcsd
  3. Apr 25, 2014 #2

    Doc Al

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    Staff: Mentor

    You think left is East?
     
  4. Apr 25, 2014 #3
    Sorry about that. I meant West for A and East for B
     
  5. Apr 25, 2014 #4

    Doc Al

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    Staff: Mentor

    Sounds good to me.
     
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