Why is momentum conserved in elastic and inelastic collisions?

  • #1
Why momentum conserved in elastic collision and inelastic collision? Please attach mathematical proof too
 

Answers and Replies

  • #2
Doc Al
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Consider Newton's 3rd law.
 
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  • #4
Chandra Prayaga
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What you wrote was just the expression for the kinetic energy. The point made by Doc Al in post #2 is that from Newton's third law, you can prove that momentum is conserved.
 
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