a river is flowing at 4m/s due south.A boat,whose speed in still water is 3m/s is steered in the direction de east.find the component of resultant velocity of boat perpendicular to the direction of river flow.
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It can be solved using vector addition.
The velocity of stream can be given as -4 j cap + 0 i cap
The velocity of boat can be given as 0 j cap + 3 i cap
Resultant vector = 3 i cap -4 j cap
|A| = √(3² + -4²) = 5 m/s
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