On collision of two balls linear momentum is conserved, it implies that even kinetic energy will remain conserved. True or False?

On collision of two balls linear momentum is conserved, it implies that even kinetic energy will remain conserved. True or False? Correct Answer False

On collision of two balls, there is no external force, so the total momentum will be conserved. But due to internal forces there could be loss of energy in the form of heat, sound or deformation (potential energy) and hence final kinetic energy will be less than or equal to initial kinetic energy.

Related Questions

Assertion: In and elastic collision of two billiard balls, the total kinetic energy is conserved during the short time of collision of balls. Reason: Energy spent against friction does not follow the law of conservation of energy