As far as I know increasing speed (= intake velocity V0) actually increases a jet engine's thrust, and ofcourse drag increases as well.
The "intake momentum drag" you are talking about is nothing I've ever heard of, but I reckon it is associated with the slowing of intake air as well as the associated increase in static air pressure in the intake at very high speeds, particularly with supersonic aircraft.
Additionally, Google would have told you
this and
this.
