In an elastic collision of two billiard balls, which of the following quantities remain conserved during the short time of collision of the balls (i.e., when they are in contact)? (a) Kinetic energy (b)Total linear momentum. Give reason for your answer in each case.

Question

In an elastic collision of two billiard balls, which of the following quantities remain conserved during the short time of collision of the balls (i.e., when they are in contact)? (a) Kinetic energy (b)Total linear momentum. Give reason for your answer in each case.,

MARKS App · Accepted Answer

When two billiard balls collide each other then their linear momentum remain conserved. When balls are in contact there may be deformation which means elastic PE which came from part of KE So, KE may not be conserved.

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