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    dportal2006's Avatar
    dportal2006 Posts: 1, Reputation: 1
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    #1

    Sep 11, 2009, 05:34 PM
    Find the instantaneous velocity of a point in the graph.
    http://i927.photobucket.com/albums/a...6/scan0001.jpg

    This link has the exact graph that relates to my question.

    I have tried answering the question however, the formula that is provided in my book for instantaneous velocity is change of V/change of t as the limit of t approaches 0. The problem is that when they are asking me the instantaneous speed of the first point like A , what is the second point that I need to use to input the change of velocity and t on the formula?

    I really appreciate the help. Thank you.
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Sep 11, 2009, 09:11 PM

    You have to understand that is the gradient of the graph. If I ask you what is the gradient of the graph at the point A. Can you find the instantaneous velocity?

    I hope it helped! :)

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