The Speed Of The Boat Still Water 00,Boats Built In Wanchese Joints,Diy Small Boat Projects 5g - Try Out

06.07.2021, admin
Aug 01, �� 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. Let the speed of the stream be skm/myboat258 boatplans of boat in still water = 11km/hrSpeed of boat in upstream = (11?s)km/hrSpeed of boat in downstream = (11+s)km/hrDistance = 12kmTherefore 11?s12 + 11+s12 = hr? (11?s)(11+s)12(11+s+11?s) = ? ?s?22 = ? ?s?2 = 41 ? 96= ?s2? s2 =25? s =�5Since speed cannot be negative, we take s =5Therefore Speed of stream is 5km/hr. The speed of a boat in still water is 11km/hr. It can go 12km up stream and return downstream to the original point in 2 hours 45 minutes. Find the speed of the stream.

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