Bird defense. To protect their young in the nest, peregrine falcons will fly into birds of prey (such as ravens) at high speed. In one such episode, a 600 g falcon flying at 20.0 m/s flew into a 1.5 kg raven flying at 90 m/s. The falcon hit the raven at right angles to its original path and bounced back with a speed of 5.0 m/s. By what angle did the falcon change the raven’s direction of motion?
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