Is K.E. Conserved During an Elastic Collision in Billiard Ball?

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SUMMARY

In an elastic collision involving billiard balls of the same mass, kinetic energy (K.E.) is conserved before and after the impact. However, during the collision itself, K.E. is not conserved due to the temporary deformation of the balls, which converts some kinetic energy into potential energy. This energy is then restored as the balls return to their original shape, resulting in the conservation of K.E. in the overall process.

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DriggyBoy
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The question is,
Is the K.E. energy conserved during the collision ?
Given Data : Collision is elastic, ball of same mass.
P.S. It is asked if the K.E. is conserved DURING the impact; not before or after it. After the collision & before it, I know the K.E. is conserved.
 
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