Homework Help: Physics help

Posted by falcon306 on Monday, August 8, 2011 at 7:06pm.

A 300 g bird flying along at 6.4 m/s sees a 10 g insect heading straight toward it with a speed of 34 m/s (as measured by an observer on the ground, not by the bird). The bird opens its mouth wide and enjoys a nice lunch.

What is the bird's speed immediately after swallowing?

I cant figure this out!

Physics help - bobpursley, Monday, August 8, 2011 at 7:11pm
Conservation of momentum:

mv+MV=(m+M)Vf

solve for Vf. Note that v, and V are opposite directions.
Physics help - falcon306, Monday, August 8, 2011 at 7:21pm
Awesome thanks a lot!

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