Y-components of momentum

  • Thread starter oridniv
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  • #1
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Main Question or Discussion Point

Why is it that in many momentum questions, the mass gets cancelled out when calculating y-components of momentum? All it says in my textbook is that they cancell out since the colliding objects are going in opposite directions, but this doesn't make any sense to me. Can someone please help?
 

Answers and Replies

  • #2
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Can you type exactly what your book says. I think you might be misreading it.
 
  • #3
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nm, i misread something, i figured it out though so don't worry
 

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