english: Well, we'll measure the amount of energy after the collision, compare it to the amount of energy before, and if there's less energy after the collision than before, this will be evidence that the energy has drifted away.
non_english: Pa, merićemo energiju posle sudara i uporediti je sa energijom pre sudara i ako bude bilo manje energije posle, to će biti dokaz da je deo energije sklonjen.