We have no meanings for "zero velocity" in our records yet.
At zero velocity, it has only its rest mass energy-notuseful for our purposes.
First, the initial velocity is zero ( zero velocity at the highest point).
The goal during the landing is to change this downward velocity to a zero velocity.
Visual fixation (VF), an eye "movement" task at zero velocity, is the simplest such abnormality in schizophrenia patients and their relatives.
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