Impulse-Momentum Theorem and acceleration

[92_stealth]

Impulse-Momentum Theorem...

Homework Statement

So here's the problem:
a 3.00 kg object has velocity 7.00 j m/s. Then, a total force of 12.0i N acts on the object for 5 seconds.
A.Calculate the object's final velocity using the impulse momentum theorem.
b. calc its acceleration from a = (vf - vi) / delta t.
c. calculate its acceleration from a = F/m

Homework Equations

<given in question>

I really don't know what to use for impulse-momentum theorem in a? Any and all help is appreciated...

 

[LowlyPion]

Welcome to PF.

F = m*a = m*Δv/Δt

F*Δt = m*Δv = Δp

So in a, you have F and Δt. That gives you Δp