Asked by Stacey grahaM

Suppose you would like to cross a 204 ft wide river in a boat. Assume that the boat can travel 37 mph relative to the water and the current is flowing westbat a rate of 6mph. What bearing should be chosen so that the boat will land at a point exactly across from the starting point?

Answers

Answered by drwls
Aim upstream at angle
A = sin^-1(6/37) = 9.3 degrees

The upstream component of the boat's velocity relative to the water will then cancel out the river's flow speed.
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