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Motion with Constant Acceleration (True/False)

  1. Feb 2, 2009 #1
    1. The problem statement, all variables and given/known data

    If an object moves with constant (non-zero) acceleration, then which of the following statements are true?
    The velocity must continually change by the same amount each second
    The acceleration must be constant
    The velocity must continually change by varying amounts depending on the speed
    The velocity must be increasing
    The position must be increasing

    2. Relevant equations

    3. The attempt at a solution

    1. (Not sure) True, if acceleration is constant then the velocity will be linear meaning it changes by the same amount each time
    2. Hm, not sure here. I'd go with false because can't the acceleration change from positive to negative and still remain constant?
    3. False, velocity will go at same speed
    4. False, could be negative acceleration
    5. True

    Some help please, not sure on some of them
  2. jcsd
  3. Feb 2, 2009 #2
    1) acceleration is (m/s)/s which means it is changing by a certain velocity each second.
    2) acceleration is a vector quantity, direction matters
    3) same as question one, velocity changes by a certain amount each second.
    4) your right exactly
    5) position could also be changing negatively, it depends on the origin and direction of acceleration.
  4. Feb 2, 2009 #3


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    Homework Helper

    You should work for the Government.

    It changes yet it can remain constant?
  5. Feb 2, 2009 #4
    lol that was pretty dumb.
  6. Feb 2, 2009 #5
    dude don't worry at least you gave it alot more thought then some people would have.
    just remember with vector quantities like accelaration and displacement and velocity, direction matters.
  7. Feb 2, 2009 #6
    Yeah, i got it now thanks for the help.
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