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A ferry is crossing a river. If the ferry is heading north with a speed of 2.5 m / s in relation to the water and the speed of the river is 3.0 m / s to the east, what will the speed of the ship be in relation to the Earth?

Answer :

PARRS4GCSEIN

Answer:

3.90 m/s

Explanation:

add the two vectors using pythagoras.

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