A river is l 268 km wide the banks are straight and


A river is L = 2.68 km wide. The banks are straight and parallel. The current is 2.6 km/h and is parallel to the banks. A boat has a maximum speed of 8 km/h in still water. The pilot of the boat aims the boat so that he crosses over to the far bank on a straight line from A to B.

A) How long does it take him to cross the river?

 

B) What is the angle with respect to the line AB at which he must aim the boat?

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Physics: A river is l 268 km wide the banks are straight and
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