Peregrine falcons stoop in order to approach prey undetected from above. Suppose a 0.8 kg peregrine falcondives straight downwards at 90 m/s. It approaches a 0.3 kg pigeon from above and clutches this pigeon in itstalons; the two birds move off together in a completely inelastic collision. If the pigeon is initially at rest, whatis the downward velocity of the two birds immediately after the collision? If the collision lasts 0.2 s, what is theaverage force of the collision? For this question you may ignore all forces other than the force of the collision.

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Physics for Scientists and Engineers with Modern Physics

10th Edition

ISBN:9781337553292

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter9: Linear Momentum And Collisions

Section: Chapter Questions

Problem 10P: The magnitude of the net force exerted in the x direction on a 2.50-kg particle varies in time as...

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Peregrine falcons stoop in order to approach prey undetected from above. Suppose a 0.8 kg peregrine falcon
dives straight downwards at 90 m/s. It approaches a 0.3 kg pigeon from above and clutches this pigeon in its
talons; the two birds move off together in a completely inelastic collision. If the pigeon is initially at rest, what
is the downward velocity of the two birds immediately after the collision? If the collision lasts 0.2 s, what is the
average force of the collision? For this question you may ignore all forces other than the force of the collision.

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when finding the F the questionnis as follow J=Favg x t . since we want the force of the collsion of both birds why dont we add their masses in finding the force part of the anser ?

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Why do we use 0.3 kg in finsing the F avg and not The mass of the peregrine ?

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