Is Momentum Conservation Sufficient for Elastic Collisions?

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Momentum conservation alone does not confirm that a collision is elastic. An elastic collision requires both momentum and kinetic energy conservation. While momentum is conserved in all types of collisions, kinetic energy conservation is specific to elastic collisions. Therefore, the presence of momentum conservation does not conclusively indicate an elastic collision. Understanding both conservation laws is essential for accurately classifying collisions.
mike2007
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If momentum is conserved in a collision. Does this indicate conclusively that the collision is elastic?

This is what i concluded but i think i am wrong

No, it does not indicate that the collision is conclusively elastic. For an elastic collision to occur both the law of conservation of momentum and the conservation of kinetic energy has to be observed.

Is that true or am i wrong..
 
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Correct. For a perfectly Elastic Collision, the total Initial Kinetic Energy in the system must equal the total Kinetic Energy after the Collision.
 
Thread 'Collision of a bullet on a rod-string system: query'

Thread 'Collision of a bullet on a rod-string system: query'

In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
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