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Vertical lines on postion vs. time graphs.

  1. Aug 30, 2013 #1
    I understand how position vs. time diagrams can give velocity. If the line is flat then the velocity is zero (the particle is still), and all the other basic things I need to know, but what if the line was vertical? The slope would be undefined; therefore, velocity would be undefined. In other words, could a particle jump from one position to another in no time? Perhaps the speed changes too sharply for the units on the graph?
     
  2. jcsd
  3. Aug 30, 2013 #2
    That can't be possible in special relativity which says the speed cannot exceed speed of light c, irrelevant to the unit of graph
     
  4. Aug 31, 2013 #3
    no graph as such exist (until you see it 100 years later in some inter nuclear motion of those subatomic particles:TO BE DISCOVERED)
     
  5. Aug 31, 2013 #4
    Thanks guys. One more thing I'm kind of confused about. If an object is slowing down in the negative x direction, then I would assume the acceleration would be positive, correct? I assume this because an object slowing down in the positive direction would have a negative acceleration.
     
  6. Aug 31, 2013 #5
    Then again, If deltaV/deltaT = a, then the answer would be just the opposite.
     
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