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# If the Potential Energy of Two Billiard Balls Depends Only on the Separation Distance Between Their Centres, is the Collision Elastic Or Inelastic? - CBSE (Science) Class 11 - Physics

ConceptConcept of Collisions

#### Question

If the potential energy of two billiard balls depends only on the separation distance between their centres, is the collision elastic or inelastic? (Note, we are talking here of potential energy corresponding to the force during collision, not gravitational potential energy).

#### Solution 1

Elastic

In the given case, the forces involved are conservation. This is because they depend on the separation between the centres of the billiard balls. Hence, the collision is elastic.

#### Solution 2

It is a case of elastic collision because in this case the forces will be of conservative nature.

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#### APPEARS IN

NCERT Solution for Physics Textbook for Class 11 (2018 to Current)
Chapter 6: Work, Energy and Power
Q: 8.4 | Page no. 136
Solution If the Potential Energy of Two Billiard Balls Depends Only on the Separation Distance Between Their Centres, is the Collision Elastic Or Inelastic? Concept: Concept of Collisions.
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