Double Ball Drop and linear momentum

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SUMMARY

The discussion revolves around calculating the velocities of two balls of different masses after they collide with the ground, specifically focusing on the smaller mass being positioned on top of the larger mass. The problem is framed within the context of linear momentum principles, emphasizing the need to apply conservation of momentum and the effects of elastic collision. The bottom ball's velocity is reversed upon impact with the ground, which is crucial for determining the subsequent motion of both balls.

PREREQUISITES
  • Understanding of linear momentum and its conservation principles
  • Knowledge of elastic and inelastic collisions
  • Basic physics of free fall and gravitational acceleration
  • Familiarity with the equations of motion
NEXT STEPS
  • Study the conservation of momentum in elastic collisions
  • Learn about the equations governing free fall and impact dynamics
  • Explore the differences between elastic and inelastic collisions
  • Investigate the effects of mass on collision outcomes in physics
USEFUL FOR

This discussion is beneficial for physics students, educators, and anyone interested in understanding the principles of momentum and collision dynamics in mechanics.

Gibanga
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I'm having a problem with this problem:

Two balls of different mass are dropped one in top of the other, more precisely the one with the smaller mass on top.

How can i figure out the velocity of both balls after the collision with the ground?

I know this is a very trivial linear momentum problem, but i just can't get my head around it.

Can someone enlighten me?

(sorry for posting this tipe of question here, I'm new to the forum and i just realized that i should post this in the homework tab, btw, how can i delete posts or move them to another place?)
 
Last edited:
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Assume reflection with the ground has just reversed the velocity of the bottom ball.
 

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