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Instantaneous speed

  1. Jul 8, 2011 #1

    I just sifting through the wikipedia article, concerning speed, for instantaneous speed and came across this bit explaining it: "...the instantaneous speed is the limit of the average speed as the duration of the time interval approaches zero." What specifically do they mean by this? If one could answer I would much appreciate it.
  2. jcsd
  3. Jul 8, 2011 #2

    Doc Al

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    Staff: Mentor

    Would you agree that over a short enough interval your speed doesn't change much? Thus your speed at any one instant will tend to equal your average speed about that instant if you take a small enough interval.

    Make sense?
  4. Jul 8, 2011 #3
    Yes, that is very much more comprehendible. Thank you very much.
  5. Jul 8, 2011 #4
    Instantaneous speed is achieved by today's world which is possible due to classical physics and contamechanics are the two types of physics. If classical physics results into positive then contamechanics results into negative.
  6. Jul 8, 2011 #5


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    Staff: Mentor

    Welcome to calculus, Bashboy!
  7. Jul 8, 2011 #6


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    Science Advisor

    Yes, Newton and Leibniz developed Calculus precisely to be able to talk about "instantaneous speed".
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