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Answer the following question" 1A: The boat in the figure is heading due north as it...

Answer the following question"

1A: The boat in the figure is heading due north as it crosses a wide river with a velocity of 11.5 km/h relative to the water. The river has a uniform velocity of 4.90 km/h due east. Determine the velocity of the boat with respect to an observer on the riverbank. find the

magnitude    
direction   

1B: Suppose the river is flowing east at 2.60 m/s and the boat is traveling south at 4.40 m/s with respect to the river. Find the speed and direction of the boat relative to Earth. find the speed and direction.

speed     m/s
direction     ° south of east
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