Answer: Newton
Explanation:-
Force is defined as an interaction that causes an affected object to be pushed or pulled in a certain direction.
\(Force=m\times a\)
where m= mass of an object
a = acceleration of the object
S.I unit of mass is kg and S.I units of acceleration is \(ms^{-2}\)
Thus For S,I units of force:
\(Force=kg\times ms^{-2}=1Newton\)