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    Linear Momentum: Conservation of Momentum

    Physics

    Study Guide
    • Study Guide
    • Topics
      • Introduction and Summary Conservation of Momentum
      • Center of Mass
      • Problems
      • Impulse and Momentum
      • Problems
      • Conservation of Momentum
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    • Terms and Formulae

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    Terms and Formulae

    Terms and Formulae

      Terms

    • Center of Mass

      The point at which a given net force acting on the system will produce the same acceleration as if all the mass were concentrated at that point.

    • Impulse

      A force applied over a period of time. See definition of impulse.

    • Momentum

      The product of an object's mass and velocity. See definition of momentum.

    • Conservation of Momentum

      The principle stating that for any system with no external forces acting on it, momentum will be conserved.

    • Formulae

       
      Position of the center of mass of a system of particles xcm = mnxn
       
      Velocity of the center of mass of a system of particles vcm = mnvn
       
      Acceleration of the center of mass of a system of particles acm = mnan
       
      Acceleration of the center of mass of a system of particles given an external force Fext = Macm
       
      Definition of Impulse J = FΔt
       
      Change in velocity caused by an impulse J = mvf - mvo
       
      Definition of momentum p = mv
       
      Relation between force and momentum = F
       
      Impulse-Momentum Theorem J = Δp
       
      Definition of the linear momentum of a system of particles P = Mvcm
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