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Homework Help: Projectile Motion - Center of Mass

  1. Nov 10, 2015 #1
    1. The problem statement, all variables and given/known data
    In a fireworks display a rocket is launched from the ground with a speed of 18.0m/s and a direction of 51.0 above the horizontal. During the flight, the rocket explodes into two pieces of equal mass. What horizontal distance from the launch point will the center of mass of the two pieces be after both have landed on the ground? If one piece lands a horizontal distance of 26.0m from the launch point, where does the other piece land?

    2. Relevant equations

    3. The attempt at a solution
    I got 32.4m for the final distance of the center of mass, but I'm not sure what to do for the landing point of the second piece.
  2. jcsd
  3. Nov 10, 2015 #2

    Simon Bridge

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    Science Advisor
    Homework Helper

    Find out the equation that tells you the pisition of the com from the positions of the two masses.
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