13.01.2021Author: admin
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 $uboat has a speed V in Stillwater and the boat is required to make a round trip in a river whose current has been you. We want to derive a formula for the time it will take for the or to make a round trip, profiting off distance D if it makes the trip upstream and then back downstream as well as directly directly across the river and back. So firstly, well, part A. Let's look at the upstream trip. So speed of boat in still water finally means: it is the speed of the boat seen by an water molecule or an observer who is flowing with the water with the same speed as that of water current. It is analogous to the speed of a boy running inside a moving train as seen by a passenger inside the train. Now the speed of a boat while going upstream is actually the speed seen by an observer standing at rest on the bank of river.� see the water stream is running downside and putting the boat to back position thus boat speed would be reduced relative to myboat325 boatplans the speed of boat relative to water is bigger,therefore. V(bw) =V(bo) + V(wo). so, V(bo) =V(bw)-V(wo). What is downstream speed when speed of boat in still water and speed of stream are given. What is upstream speed when speed of boat in still water and speed of stream are given. Speed of boat in still water when speed of downstream and upstream are given. Speed of water when speed of downstream and upstream are given. Speed of stream is ukm/hr and speed of current is v km/hr then time taken by man to cross the river is equal to cover the distance between two banks of river in u km/hr. Rate of current when man go across the width of river in t and t hours. Miscellaneous. Share This Video.
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