(A) : In an elastic collision of two billiard balls, the total kinetic energy is conserved during the short time of oscillation of the balls (i.e., when they are in contact).(R ) : Energy spent against friction does follow the laws o conservation of energy.

(A) : In an elastic collision of two billiard balls, the total kinetic

1.	(A) : In an elastic collision of two billiard balls, the total kinetic energy is conserved during the short time of oscillation of the balls (i.e., when they are in contact).(R ) : Energy spent against friction does follow the laws o conservation of energy.
Answer» Both (A) and (R ) are TRUE and (R ) is the correct EXPLANATION of (A) Both (A) and (R ) are true and (R ) is not the correct explanation of (A) (A) is true but (R ) is false (A) is false and (R ) is false ANSWER :D