The noun "impact" can be countable or uncountable. In more general, commonly used, contexts, the plural form will also be "impact". However, in more specific contexts, the plural form can also be "impacts" e.g. in reference to various types of impacts or a collection of impacts.

Is it correct to say impacts?

Word forms: plural, 3rd person singular present tense impacts, present participle impacting , past tense, past participle impacted pronunciation note: The noun is pronounced (ɪmpækt ). ... The impact that something has on a situation, process, or person is a sudden and powerful effect that it has on them.

Which is correct impact or impacts?

As nouns the difference between impact and impacts

is that impact is the striking of one body against another; collision while impacts is .