Final speed of two billiard balls

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Homework Help Overview

The discussion revolves around a problem in mechanics involving the final speed of two billiard balls colliding completely inelastically. The scenario includes two balls, each with a mass of 0.5 kg and an initial speed of 2.8 m/s.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the application of the conservation of momentum principle and question the specific formula to use. There is uncertainty about the correct formulation for the problem.

Discussion Status

Some participants have provided guidance on using conservation of momentum, while others express uncertainty about the formulas involved. The discussion is ongoing, with various interpretations being explored.

Contextual Notes

There is a suggestion to post the exact problem details, indicating that some information may be missing or unclear. Participants are navigating through the assumptions related to the collision type.

pebbles
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Both have mass of .5 kg and speed of 2.8 m/s; collide completely inelastically

Do I use the conservation of momentum formula? v2= m1/m1 + m2 * v1?

Ugh.
 
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Use conservation of momentum. (Not sure about that formula, though.) Why not post the exact problem?
 
A billiard ball with mass .5 kg has a speed of 2.8 m/s and collides completely inelastically with a ball of same mass.

Find the final speed of two balls.


What formula do you know for the conservation of momentum?
Thanks!
 
The formula you quoted will work fine for this problem.
 
yaaay! ok. that's a lot!
 

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