Momentum Conservation and Collisions Concept?

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SUMMARY

The discussion centers on the principles of momentum conservation during collisions, specifically involving a 100 kg man running and a 90 kg man walking. It is established that while the total momentum of the system is conserved, individual momenta may change due to the collision. The confusion arises from the distinction between total momentum conservation and the changes in individual momentum, particularly for the 100 kg man whose velocity decreases upon collision.

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  • Understanding of basic physics concepts, particularly momentum and collisions.
  • Familiarity with the principle of conservation of momentum.
  • Knowledge of elastic and inelastic collisions.
  • Ability to apply the equation for change in momentum: Δp = MV(final) - MV(initial).
NEXT STEPS
  • Study the principles of elastic and inelastic collisions in detail.
  • Learn how to calculate total momentum before and after collisions.
  • Explore real-world applications of momentum conservation in sports and vehicle collisions.
  • Investigate the effects of mass and velocity on momentum in various scenarios.
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Students studying physics, educators teaching momentum concepts, and anyone interested in understanding the dynamics of collisions and momentum conservation.

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Homework Statement


A 100 kg man and a 90 kg man are rounding a corner and collide. The heavier man is running, while the 90 kg man is walking. What happens to the momentum of the 100 kg man? Does it increase, decrease, stay the same, or "is conserved"?


Homework Equations


Change in momentum = MV(final) -- MV(initial)


The Attempt at a Solution


Out of the multiple choice answers, I would think that his momentum would decrease because his velocity is decreasing, but I know that in such elastic collisions, momentum is ALWAYS conserved. This is why I'm confused. Any explanation would be greatly appreciated! :)
 
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The total momentum is conserved. All the individual momenta are, generally, not or collisions wouldn't change anything!
 
Thank you very much!
 

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