Delta-v (physics)

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In general physics, delta-v is simply a change in velocity. The Greek uppercase letter delta is the standard mathematical symbol to represent change in some quantity.

Depending on the situation, delta-v can be either a spatial vectorv) or scalarv). In either case it is equal to the acceleration (vector or scalar) integrated over time:

(vector version)
(scalar version)


  • v0 or v0 is initial velocity (at time t0),
  • v1 or v1 is subsequent velocity (at time t1).