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Proving constant velocity

  1. Sep 23, 2009 #1
    1. The problem statement, all variables and given/known data

    Prove that 2 motorized toy cars have a constant velocity.
    A car was set up at a marked spot, then turned on and left to go for 3m. This was done three separate times and was timed using 2 timers (2 people).
    how can i prove a constant velocity?

    I have the averages for both times given and I have averaged out how long it took for the car to go 1m.

    What type of graph should I used to prove a constant velocity? How do I prove a constant velocity? Position v. Time or Velocity v. Time graph?
     
  2. jcsd
  3. Sep 23, 2009 #2
    you have to measure and graph distance travelled vs. time and see if you get a straight line.
     
  4. Sep 23, 2009 #3
    Ok, so I got my velocity. So I just graph the velocities on a graph and link them to see if i have a straight line? If the line/velocities are similar can i conclude that they have the same velocities (allowing room for errors, such as reaction time)?
     
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