Momentum

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Momentum

• momentum - property of all moving objects a
  vector quantity defined as an object's mass times
  its velocity
• from F ma
• F mDv
• Dt
• using algebra FDt mDv
• impulse momentum
• momentum p mDv units kgm/s
• m(Vf - Vi)

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Conservation of Momentum

• Law of conservation of momentum
• - total momentum of all objects interacting with
  one another remains constant. Initial momentum is
  equal to final momentum.
• m1v1,i m2v2,i m1v1,f m2v2,f
• total initial momentum total final momentum
• Kinetic energy remains the same. No energy is
  lost.
• http//www.walter-fendt.de/ph11e/collision.htm

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Conservation of Momentum

• elastic collisions - a collision between two
  objects where the objects "bounce off" or remain
  separate from each other after the collision.
• m1v1,i m2v2,i m1v1,f m2v2,f
• http//www.walter-fendt.de/ph11e/collision.htm

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Conservation of Momentum

• inelastic collisions - a collision between two
  objects where the objects remain "stuck" or
  connected together after the collision.
• Kinetic energy is lost to other forms of
  energy.
• m1v1,i m2v2,i (m1 m2)vf
• http//www.walter-fendt.de/ph11e/collision.htm

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Inelastic collision

• http//www.physicsclassroom.com/class/momentum/u4l
  2b.cfm

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Elastic or inelastic?
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Elastic or inelastic?
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Now you give me two problems for inelastic and
two for elastic.

• Include a word problem and diagram as well as the
  solutions. You can pair up. Be creative! EXTRA
  POINTS FOR EXTRA IMAGINATION!