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Finding acceleration with two perpendicular velocities

  1. May 12, 2016 #1
    1. The problem statement, all variables and given/known data
    There are two moving objects. The velocity of the first object, u, is constant. The second object maintains a constant velocity, v, perpendicular to u. The distance between the two objects is x. What is the second object's acceleration, a, in that moment?

    3. The attempt at a solution
    I'm unsure of how to really begin and if I'm on the right track but since the acceleration is perpendicular to u, there would be a centripetal force, because when acceleration is perpendicular to velocity there is circular motion. Would a=v2/r show the relationship?

    Edit: Sorry about the typo in the title. It should say "two"
     
    Last edited: May 12, 2016
  2. jcsd
  3. May 12, 2016 #2

    andrewkirk

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    What dog? And what acceleration? Nothing in what was described before the question involves either a dog or an acceleration.
     
  4. May 12, 2016 #3
    Sorry meant to put object instead. That's how the problem asks about the acceleration. It doesn't add any other information
     
  5. May 12, 2016 #4

    andrewkirk

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    There is no acceleration in the problem as stated, since both objects have constant velocities. So the answer to the question as put is zero. I suspect that they meant to ask a different question though, involving acceleration, but messed it up (or perhaps the above is not a verbatim rendering of the question?). What that question was supposed to be, who knows?
     
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