Physics momentum and impulse questions

1. Mar 25, 2012

Ereny

an 8.0 N force acts on a 5.0 kg object for 3.0 sec. what impulse is given to the object? what change in momentum does to his impulse cause? if the object's initial velocity is 25 m/s determine the final velocity of the object?

i have the right answers cuz my teacher gave them to use .. but i dont know how to get there.. am i suppose to combine both masses? and use the impulse equation which is p=f.t ??

i am really confused and i would really appreciate any help thanks.

2. Mar 25, 2012

cepheid

Staff Emeritus
This is all really straightforward. It is asking you for the impulse. Well, what is the definition of impulse?

3. Mar 25, 2012

Ereny

isn't it a force.. i am really confused btw the meaning of impulse and momentum

4. Mar 25, 2012

Staff: Mentor

There is only one mass mentioned here, there is no other mass to "combine" it with.
If an impulse acts on a body it causes a change of momentum of that body. Equate the impulse to the change of momentum as: F·∆t = m·∆v

Q: what are the units of momentum?