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Acceleration part 3

  1. Apr 16, 2007 #1
    1. The problem statement, all variables and given/known data

    Reconsider the assumption made in part 1 regarding the constancy of ga. Briefly comment on the validity of this assumption.

    2. Relevant equations

    part 1-


    3. The attempt at a solution

    The equation used is

    s=ut+1/2 at2.

    This equation is valid when neglecting air resistance. And is valid as there is no air resistance in space.

    (is this correct)
  2. jcsd
  3. Apr 16, 2007 #2


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    Staff Emeritus
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    More generally; the equation is valid for constant acceleration (i.e. there exist no external forces) which is the case in space.

    (In future, it may be better to contine each question in the same thread!)
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