Question
A boat needs to travel south at a speed of 20 km/h. However a constant current of 6 km/h is
flowing from the south-east. Use vectors to find:
a.the equivalent speed in still water for the boat to achieve the actual speed of 20 km/h.
b the direction in which the boat must head to compensate for the current.
flowing from the south-east. Use vectors to find:
a.the equivalent speed in still water for the boat to achieve the actual speed of 20 km/h.
b the direction in which the boat must head to compensate for the current.
Answers
we need <x,y> such that
<x,y> + <6/√2,6/√2> = <0,-20>
Now it's easy to get x and y, and thence the speed and direction.
<x,y> + <6/√2,6/√2> = <0,-20>
Now it's easy to get x and y, and thence the speed and direction.
Answer
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