Asked by Anonymous
A river is flowing at 3mps.A man can swim in still water at a speed of 6mps.The angle at which the bank at which the swimmer should start ,so that he may cross the river along the shortest distance is?
Answers
Answered by
Damon
Say the river runs south
We want to end up going east
Our velocity north will be 6 cos T - 3 = 0
if T is angle from north
cos T = 1/2
T = 60 degrees from north which is 30 degrees from straight across
We want to end up going east
Our velocity north will be 6 cos T - 3 = 0
if T is angle from north
cos T = 1/2
T = 60 degrees from north which is 30 degrees from straight across
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