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Homework Help: Definition of a specific kind of motion

  1. Nov 2, 2015 #1
    1. The problem statement, all variables and given/known data

    It is not really a homework question, but rather a translation problem. I searched everywhere, but I still cannot find a good translation into English of a term that is defined as:

    "In mechanics, the motion of a moving reference frame relative to another (primary) reference frame that is considered fixed".

    2. Relevant equations

    ...the linear velocity Vkof particle k, due to such {"frame rotation/motion" ? the term I'm looking for }, is defined by formula
    where VBgSHQ6.png is a vector of the angular rate of rotation of the two-dimensional system relative to axis Z of the three-dimensional reference frame, ez is a unit vector along axis Z, index i enumerates time moments of the two-dimensional world...

    3. The attempt at a solution

    (relative) frame motion / rotation

    I'd be immensely thankful for any help!
  2. jcsd
  3. Nov 2, 2015 #2
    I would call that 'absolute motion.'
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