Maybe this will help you out:
Momentum is calculate by the formula:
[tex]P = mv[/tex]
Where:
P = momentum
m = mass
v = velocity
The SI unit:
[tex]mass = kg\\ velocity = \dfrac{m}{s}[/tex]
So the unit of momentum would be:
[tex]kg.\dfrac{m}{s}[/tex]
Impulse is defined as the change in momentum or how much force changes momentum. It can be calculate with the formula:
I = FΔt
where:
I = impulse
F = Force
Δt = change in time
The SI unit:
F = Newtons (N) or [tex]kg.\dfrac{m}{s^{2} }[/tex]
t = Seconds (s)
So the unit of impulse would be derived this way:
I = FΔt
I = [tex]kg.\dfrac{m}{s^{2} }[/tex] x [tex]s[/tex]
or
[tex]\dfrac{kg.m.s}{s^{2}} = \dfrac{kg.m.s}{s.s}[/tex]
You can then cancel out one s each from the numerator and denominator and you'll be left with:
[tex]kg.\dfrac{m}{s}[/tex]
So then:
Momentum: Impulse
[tex]kg.\dfrac{m}{s}[/tex] [tex]kg.\dfrac{m}{s}[/tex]
