Which of the Following Potential Energy Curves in Fig. Cannot Possibly Describe the Elastic Collision of Two Billiard Balls? Here R is Distance Between Centres of the Balls. - Physics | Shaalaa.com

1 In an elastic collision of two billiard balls, does the kinetic energy remain conserved during the short time of collision of the balls i.e., when they are in contact. Give reason for your answer.2 In an elastic collision of two billiard balls, does the total momentum remain conserved during the short time of collision of the balls i.e., when they are in contact. Give reason for your answer.

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