impact (v.) Look up impact at Dictionary.com
c.1600, "press closely into something," from Latin impactus, past participle of impingere "to push into, dash against, thrust at" (see impinge). Originally sense preserved in impacted teeth (1876). Sense of "strike forcefully against something" first recorded 1916. Figurative sense of "have a forceful effect on" is from 1935. Related: Impacting.
impact (n.) Look up impact at Dictionary.com
1781, "collision," from impact (v.). Figurative sense of "forceful impression" is from 1817 (Coleridge).