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  1. Strange design

    Teaching change in velocity

    I would also agree that the magnitude of the velocity, or the speed, is increasing in the negative direction.
  2. Strange design

    Teaching change in velocity

    Yes, I am just talking about 1-Dimensional motion.
  3. Strange design

    Teaching change in velocity

    I agree. So look at this graph. I read this to say that the velocity is decreasing from 4.0 s to 14.0 s. Quite frankly, I don't see any other way to interpret it unless you start incorporating speed into the discussion, but that isn't necessary because all of the information about the...
  4. Strange design

    Teaching change in velocity

    Thanks for the reply. I would also say an object accelerates when it is slowing down or the magnitude of the velocity is decreasing, not just speeding up and increasing, respectively. Its just a negative acceleration. Im not sure i got your response about how you would regard this change, do...
  5. Strange design

    Teaching change in velocity

    Thanks for the reply .Scott. So are you saying that either would be fine? To me, if I say that the velocity is "increasing," then by definition, I am saying that he acceleration is positive. In this case the acceleration is negative.
  6. Strange design

    Teaching change in velocity

    Good afternoon all, For those of you that teach physics, if an object has an initial velocity of - 5m/s and a final velocity of -20 m/s, do you consider the velocity to be increasing or decreasing in this case? I view this to be strictly defined mathematically, that is that the acceleration is...
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