Completely Inelastic Collision

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SUMMARY

The discussion centers on the analysis of a completely inelastic collision involving two objects of equal mass and initial speed, which move together post-collision at one-third of their initial speed. The key challenge is determining the angle between their initial velocities in a two-dimensional context. Participants note the absence of specific equations for such collisions in two dimensions in standard textbooks. A participant initially calculated the angle to be 45 degrees but later found this to be incorrect.

PREREQUISITES
  • Understanding of momentum conservation principles
  • Familiarity with two-dimensional vector analysis
  • Knowledge of completely inelastic collision characteristics
  • Basic proficiency in physics problem-solving techniques
NEXT STEPS
  • Study the conservation of momentum in two-dimensional collisions
  • Explore vector addition and angle calculations in physics
  • Review examples of completely inelastic collisions in physics textbooks
  • Practice solving collision problems using graphical methods
USEFUL FOR

Students studying physics, educators teaching mechanics, and anyone interested in understanding collision dynamics in two dimensions.

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After a completely inelastic collision, two objects of the same mass and same initial speed are found to move away together at 1/3 their initial speed. Find the angle between the initial velocities of the objects.

I think that this question is dealing with collisions in two dimensions. My textbook does not give any equations for completely inealstic collisions in two dimensions. Any help?
 
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It just means they stick together, so you have a final particle of 2*mass
 
I went through and ended up getting an answer of 45 degrees. But that ended up being wrong.
 

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