Collisions of commercial aircraft with birds are a serious safety hazard, especially when a plane is taking off or landing. Consider a typical goose that collides with an airplane taking off at 70 m/s (about 150 mi/h) and compare the impact with that of a 500-kg mass (about half the size of a small car) dropped from a height of 3 m. Which impact—the goose hitting the plane or the mass hitting the ground—will likely do more damage? Or will it be about the same? Hint: Compare the kinetic energy of the mass just before it hits the ground with the kinetic energy of a goose moving at 70 m/s.
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