Why the mechanical energy loss is the biggest in completely inelastic collision? The biggest loss of mechanical energy should not be the two objects that move at first, but they all stop at last?

Why the mechanical energy loss is the biggest in completely inelastic collision? The biggest loss of mechanical energy should not be the two objects that move at first, but they all stop at last?

The mechanical energy before collision is e. if it is not completely inelastic collision, the mechanical energy after collision is e '≠ 0. If it is completely inelastic collision, the mechanical energy after collision is 0, of course, the loss is the largest. Let's see the konich theorem in the competition First of all, imagine a scene. A car a is moving at a constant speed, another car B is stationary, behind B