Inelastic collisions may not conserve kinetic energy, but they do obey conservation of momentum.
Why does it use "may"? Does this imply that kinetic energy is sometimes conserved in an inelastic collision? As far as I know I haven't ever heard of such a situation. Is it possible?
First I thought may be potential energy is lost and changed to kinetic energy causing the final K.E. to increase, but I am unable to account for conservation of K.E. (Final k.e.=initial k.e.).
Also what then should be the perfect definition for an inelastic collision?