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Velocity equation

  1. Dec 5, 2009 #1
    I have a body of 1kg of mass being acted on by a force of magnitude equal (10000/(y^2))
    [where y is the distance between the body and a certain point] and this force is in the direction pointing to the point
    so depending on what mentioned above :-
    what i know is : f = a = (1000 0/(y^2))
    and that Dy/Dt = V (velocity)

    What is needed is the function of the velocity in terms of time.
    Thanks for reading.
  2. jcsd
  3. Dec 5, 2009 #2
    As you have said a=10000/(y^2)
    if y is a fixed value and independent of time ,integrating with respect to t

  4. Dec 5, 2009 #3
    ofcourse y is not a constant value since the distance which is y decreases as the body moves towards the point
  5. Dec 5, 2009 #4
    any help ??
  6. Dec 6, 2009 #5
    is it this hard i just want to know the velocity equation between body attracted to a point or another body!!!!
  7. Dec 6, 2009 #6


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    Staff Emeritus
    Science Advisor
    Homework Helper

    You probably need to find the velocity as a function of distance y first. Using energy conservation would help with that.
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