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Force and acceleration

  1. Apr 1, 2008 #1
    1. The problem statement, all variables and given/known data
    in accelaration is it must for a force to be involved?
    is it must for accelaration to be constant in absence of force?

    2. Relevant equations

    3. The attempt at a solution

    well as far as my attempt goes for both q i am getting only one ans and that is yes.
    but the actual answers are different,i.e,no.
    i thought lot but i cant gety at it.
    kindly help.
  2. jcsd
  3. Apr 1, 2008 #2

    Doc Al

    User Avatar

    Staff: Mentor

    The first question is straightforward; the answer is yes.

    But that second question is a strange one; in the absence of force what must the acceleration be?
  4. Apr 1, 2008 #3
    i forgot to mention this that only real forces must be taken.
    the actual q is matchin-
    acceleration- i)frame dependent
    ii)force must be involved
    iii)must be in the direction of net for(including pseudoforce)
    iv)must remain constant if no force is there

    to which options does acceleration match?
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