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Homework Help: Simple classical physics inquiry

  1. Apr 25, 2015 #1
    [Mentor's note -- this post does not use the homework template because it was moved here from a non-homework forum.]


    ImageUploadedByPhysics Forums1429994664.445878.jpg

    Not sure how the extra velocity quantity appears after deriving both side of the velocity function to get acceleration. Please help.
    Last edited by a moderator: Apr 25, 2015
  2. jcsd
  3. Apr 25, 2015 #2


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    Staff: Mentor

    You're given v as a function of x, not as a function of t. Therefore you have to use the chain rule: $$a = \frac{dv}{dt} = \frac{dv}{dx} \frac{dx}{dt}$$
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