The speed of a boat in still water is v. The boat is to
Chapter 3, Problem 66(choose chapter or problem)
The speed of a boat in still water is v. The boat is to make a round trip in a river whose current travels at speed u. Derive a formula for the time needed to make a round trip of total distance D if the boat makes the round trip by moving (a) upstream and back downstream, (b) directly across the river and back. We must assume u < v: why?
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