Which of the following potential energy curves in figure., cannot possibley describly describe the elastic collision of two billiard balls ? Here r is distance between centres of the balls.

Which of the following potential energy curves in Fig. 6.18 cannot possibly describe the elastic collision of two billiard balls? Here r is the distance between centres of the balls.

Which of the following potential energy curves in Fig. 6.18 cannot possibly describe the elastic collision of two billiard balls ? Here r is the distance between centres of the balls.

Which of the following potential energy curves in figure cannot describe the elastic collision of two billiard balls ? Here r is the distance between centres of the balls .

Which of the following potential energy curves in Fig. 6. 18 cannot describe the elastic collision of two billiard balls? Here r is the distance between centres of the balls.

During elastic collision of two balls, is kinetic energy conserved during the short interval of contact of balls ?

During elastic collision of two balls, is kinetic energy conserved during the short interval of contact of balls ?

In the following question, a statement of Assertion is followed by a statement of Reason. Mark the correct choice. Assertion: In an elastic collision of two billiard balls are in contact with each other. During the short time of collision, kinetic energy is conserved. Reason: Energy, spent against friction does not follow the law of conservation of energy