Purely aesthetically, i'd prefer impact on, although the transitive form is useful in the passive. Is the preposition in grammatical here? Is there a grammarians' consensus as to the usage of impact (as a verb)?
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Impact (early 17th century) comes from the past form of the same source.
The use of impact as a verb to indicate greater effect seems to have come into use in the 1960s.
Nowadays, we often see the word impact being used as a verb. But ngram for impacted him vs impacted on him shows the version without on is much. Oxford dictionaries gives the following example: Should it always take the preposition on or is it a matter of personal preference?
My question is, should it be always followed by the preposition on? This change has no impact in the system's current behaviour. Impact 通常指“ 重大的影响 ”，名词，动词形式都有。 我们先来看 impact: This change has no impact on the system's current beha.
Her speech made a profound impact on everyone.
