What is the difference between elastic and inelastic collisions?

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Today I will explain the difference between elastic and inelastic collisions in detail.

Elastic Motion

  • K.E is conserved.
  • P.E is conserved.
  • No energy is lost whatsoever.
  • If a ball is bouncing with elastic motion, it would keep bouncing infinitely and height of re-bounce does not change as it loses no energy to sound or friction.

Inelastic Motion

  • K.E is not conserved.
  • P.E is not conserved.
  • Energy is lost.
  • If a ball is bouncing non-elastically, it would bounce sometimes and then settle down on ground.

K.E is mostly lost in various cases as no matter what we do, the sytem cannot be 100% efficient and some energy is lost to sound, friction or momentum.

Conclusion

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Recap of what we just learned?

  • Difference between elastic and inelastic collisions
  • Elastic Motion
  • Inelastic Motion

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