Question #113680

A ship steams due west at the rate of 15 kmph when the river is flowing at the rate 6 kmph due south. What is the velocity relative to the ship of a train going due north at the rate of 30 kmph?

Expert's answer

Relative velocity of train with respect to still water = "30-(-6)= 36 \\ km\\ per \\ hr"

Relative velocity of train with respect to ship =

"\\sqrt{36^2+ 15^2}=39 \\ km \\ per\\ hr"

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