True eruption profiles (height, velocity, and acceleration) of the filament apex fast and main components. We note that the profiles in panel (a) show the actual propagation distance of the filament eruption measured from the initial position of the filament apex (see the text). The eruption profiles reveal that the filament attains a large propagation distance (panel a), high propagation speed (panel b), and fast acceleration (panel c). Of note regarding the velocity and acceleration profiles is that the fast and main components evolve identically until 05:35 UT, thereafter the profiles deviate from each other, that is, one accelerates impulsively while the other undergoes a rapid diminution.