Where Does Thermal Energy Come From in an Inelastic Collision?

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SUMMARY

Inelastic collisions result in the conversion of kinetic energy into thermal energy, which occurs when objects stick together post-collision. The discussion highlights the misconception that thermal energy cannot arise in a frictionless environment, clarifying that energy transformation still occurs. Momentum is not conserved in inelastic collisions due to this energy absorption, leading to an increase in thermal energy within the system.

PREREQUISITES
  • Understanding of inelastic collisions
  • Basic principles of kinetic energy
  • Concept of momentum conservation
  • Frictionless surfaces in physics
NEXT STEPS
  • Study the principles of energy transformation in inelastic collisions
  • Learn about the conservation of momentum in different types of collisions
  • Explore the role of thermal energy in mechanical systems
  • Investigate real-world applications of inelastic collisions
USEFUL FOR

Students preparing for physics exams, educators teaching mechanics, and anyone interested in the principles of energy and momentum in collisions.

isukatphysics69
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Homework Statement


whereisthermalenergy.PNG


Homework Equations


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The Attempt at a Solution


I am going through the final exam problem sets right now and just looked at the answer key and wondering where in this system there could be thermal energy? while i was working through the problem i assumed no thermal energy because of the frictionless floor. where in this system is there thermal energy coming from?
also wondering why momentum was not conserved
 

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isukatphysics69 said:
where in this system is there thermal energy coming from?
also wondering why momentum was not conserved
The two nicely fit together: in the inelastic collision (the blcks stick together) some kietic energy is absorbed and thus converted to thermal energy.

Good luck with your exam...

PS lousy picture to read for a helper, but I don't want to upset you at this time ...
 
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