The units for impulse are
[tex]N\cdot s[/tex]
Explanation:
We have two definition for impulse:
1) Impulse is defined as the product between the force exerted on an object and the time interval during which the force is applied:
[tex]I=F \Delta t[/tex]
where
F is the force, measured in Newtons (N)
[tex]\Delta t[/tex] is the time interval, measured in seconds (s)
From this definition it follows that Impulse can be measured in [tex]N\cdot s[/tex], which corresponds to option 3)
2)
Impulse is also defined as the change in momentum of an object:
[tex]I=\Delta p[/tex]
where
[tex]\Delta p[/tex] is the change in momentum of the object
The change in momentum has the same units of the change in momentum, so [tex]kg \cdot m \cdot s^{-1}[/tex], which corresponds to none of the options given
So the only correct option is
[tex]N\cdot s[/tex]
Learn more about impulse and change in momentum:
brainly.com/question/9484203
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