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Motion vs Inertia

  1. Jun 28, 2013 #1
    How do physicists determine whether the thing they are measuring, a particle for example, is inert or under motion?
  2. jcsd
  3. Jun 28, 2013 #2


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    Staff: Mentor

    I'm sorry, but the question doesn't make much sense. Maybe you misunderstand what inert, motion or inertia mean. Could you elaborate and/or give an example please.
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