SOLUTION: A boat propelled so as to travel with a speed of 25 ms-1 in still water, moves directly across a river 600m wide, the river flowing at 15 ms-1. How long will it take the boat to ac
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Question 626423: A boat propelled so as to travel with a speed of 25 ms-1 in still water, moves directly across a river 600m wide, the river flowing at 15 ms-1. How long will it take the boat to across the river? Toward what point on the opposite share is the point headed when it start. Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! A boat propelled so as to travel with a speed of 25 ms-1 in still water, moves directly across a river 600m wide, the river flowing at 15 ms-1. How long will it take the boat to across the river?
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The boat's speed wrt the Earth =
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Toward what point on the opposite share is the point headed when it start.
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To travel in a straight line, the boat's heading will be into the current.
The angle from "straight across" is asin(15/25)
=~ 36.9 degrees.
