Impulse and Momentum of an object

[89kyle]

Homework Statement

Question 2: A one-dimensional impulse force acts on a 3.0-kg object, as described by the graph below. Find
(a) the magnitude of the impulse given to the object,
(b) the magnitude of the average force, and
(c) the final speed if the object had an initial speed of 6.0 m/s.

Homework Equations

impulse=mv-initialmv

The Attempt at a Solution

 

[matt_crouch]

have you attempted the solution? how far have you got where are you stuck?
you need to put the graph up as well i think =]