Calculating Linear Momentum of Flag-Pole/Bird System

[Niles]

Homework Statement

If I have a bird that flies into a flag-pole with velocity x m/s, and the flag-pole trips, how do I find the linear momentum of the flag-pole/bird system? (The bird gets stuck to the flag-pole).

The Attempt at a Solution

I know how to find the angular momentum, but does it even make sense to talk about linear momentum in this case?

 

[timon]

depends on the type of flag pole i guess