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Homework Help: 2 particles 1 direction

  1. Feb 4, 2005 #1
    Two particles are at the same point at the same time, moving in the same direction. Particle A has an inital velocity of 6.4 m/s amd am acceleration of 1.7m/s^2. Particle B has an initial velocity of 2.2 m/s and an acceleration of 5 m/s^2. At what time will B pass A? Answer in units of s.
  2. jcsd
  3. Feb 4, 2005 #2
    Use the following kinematics formula and equal the distances they travel. Then, solve for time.

    [tex]d = V_it+ \frac{1}{2}at^2[/tex]
  4. Feb 4, 2005 #3
    so its 6.4t+1/2*1.7t^2=2.3t+1/2*5t^2 ?
  5. Feb 4, 2005 #4
    precisely :!!)
  6. Feb 4, 2005 #5
    got it thanks
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