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This is prob a stupid question

  1. Feb 22, 2004 #1
    is there a difference between decelaration and a deceleration force or are they just the same thing?

    thanx(an don't laugh)
  2. jcsd
  3. Feb 22, 2004 #2


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    Deceleration is the common word for a negative acceleration. Physicists don't use it much because they are cool with negative numbers, so that negative- positive, it's all acceleration.

    Deceleration force would be a force (of course). A force is different from an acceleration and they are related by Newton's law: force = mass X acceleration, or F = ma, as it's usually stated.

    So if you tromp on the brakes, what your car is doing is decelerating, and that pull forward you feel is deceleration force.
  4. Feb 23, 2004 #3
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