impulsion

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1. The act of impelling or the condition of being impelled: “I do not move . . . unless it be under the impulsion of a third party” (Samuel Beckett).
2. An impelling force; a thrust.
3. Motion produced by an impelling force; momentum.
4. A wish or urge from within; an impulse.

A motion produced by an impulse.

An urge to perform certain actions without regard for internal or social constraints.

The noun has 2 meanings:

Meaning #1: a force that moves something along
  Synonyms: drift, impetus

Meaning #2: the act of applying force suddenly
  Synonyms: impulse, impetus