(Answered) A large shoal of krill rises to the surface of the ocean

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A large shoal of krill rises to the surface of the ocean. This provokes a feeding frenzy. A pod of dolphins swim towards the shoal from the south with a speed of 3.22 m/s. A flock of pelicans flies towards the shoal from the north with a speed of 25.4 m/s. A school of anchovy meanwhile approaches the shoal from the east with a speed of 0.622 m/s.

What is the relative speed of the pelicans as measured by the dolphins?

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