On a frictionless horizontal air table, puck A $($with mass $0\mathrm{.}245$kgkg$)$ is moving toward puck B $($with mass $0\mathrm{.}373$kgkg$),$ which is initially at rest. After the collision, puck A has velocity $0\mathrm{.}122$m$/$sm$/$s$$to the left, and puck B has velocity $0\mathrm{.}647$m$/$sm$/$s$$to the right.

Calculate$$K$,$ the change in the total kinetic energy of the system that occurs during the collision.