Velocity of ambiguity and maximum displacement

Good morning everyone,
I’m getting confused about some basic concepts of velocity of ambiguity and fringes formation.
How are these 2 concepts related?
I mean, talking about Sentinel 1, I’ve understood that between 2 selected images (6days, 12days, 36days and more) we can’t have a displacement bigger than 1.4cm in this same baseline, wright?
So, this should mean a velocity of ambiguity of 1.4/ the chosen baseline. But what if a point moves with a velocity > velocity of ambiguity? Does it decorrelate?
And so last point: how does unwrapping deal with these situations?

Thanks for your time and help!!!