Delta-vee
Delta-vee (or Δv) was the change in velocity of a spaceship or other stellar object to escape gravitational forces. The term was usually synonymous with a ship's capability of changing its course in different maneuvers until all its power was depleted.

The 22nd century starship  could achieve a delta-vee of 3.7 NVP. ()

In 2366, when the crew of the  tried to restore the orbit of Bre'el IV's moon, a delta-vee of four kilometers per second were needed. Due to the moon's large mass, the  vessel was only capable of producing a delta-vee of ninety two meters per second and were not able to produce that speed increase in time even with powering up the tractor beam and exceeding the recommended impulse engine's power limit by 47%. ()

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Propulsion technology
Physics