Sep 13, �� Solution: Speed of the boat (B) = 8 Speed of the stream (S) = 3 Upstream speed = B � S = 8 � 3 = 5 km/hr (answer) 2. A boat covers a distance of 30 km in 3 hrs in the direction of stream and covers same distance in 5 hrs in opposite direction of the stream. Find speed of the boat in still water. 3. In still water, speed of boat is 10 km/hr. Jun 12, �� Downstream = (u+v)Km/hr, where �u� is the speed of the boat in still water and �v� is the speed of the stream; Speed of Boat in Still Water = ? (Downstream Speed + Upstream Speed) Speed of Stream = ? (Downstream Speed � Upstream Speed) Average Speed of Boat = {(Upstream Speed ? Downstream Speed) / Boat�s Speed in Stii Water}. B/R = 3/1, R = B/3. R = 9/3 = 3km/h Type 2: A boat cover certain distance downstream in t 1 hours and returns the same distance upstream in t 2 hours. If the speed of stream is y km/h, then the speed of the boat in still water is: Short Trick: Speed of Boat = y [(t 2 + t 1) / (t 2 � t 1)] Example.
Boats and Streams Formula pages has all the conceptual Formulas for Boats and Streams. Speed downstream = (u + v) km/hr Speed upstream = (u � v) km/hr.� This a very simple topic and require to direct application of Formulas to solve the question. Formulas for Boats and Streams Questions with Basic Concepts. 1. What is Downstream: It is related to the direction of water flow in respect with the object, when the object or body is flowing in direction of stream it is called as Downstream.� Below are the best formulas for boats and Streams problems in seconds. Basic Formulas for Upstream and Downstream. Basic Formulas of Boats and Streams 1. Basic Formulas on Boats and Streams 2. Additional Formulas of Boats and Streams 1. Boats and Streams questions require concepts and formula of time speed and distance. However, various tricks and shortcut formulas are handy to save time.� Fortunately, there are some shortcut formulas available to handle such problems. In this article, besides an understanding of the basic concepts of boat sand streams, we will also learn few tricks to solve some exceptional questions. Boats and Streams � Terminologies: Stream: It implies that the water in the river is moving or flowing. Downstream or with the stream: It indicates that the stream favors the man�s rowing (or boating). i.e., the direction of rowing and direction of flow (stream) is same. Boats - Stream Problems deals with the downstream, the upstream and the rate of the stream. Downstream: In water, the direction along the stream is � The chapter of boat and stream is based on the application of time and distance. There are two terms which are frequently used in this chapter are downstream ad upstream. Methods. Method 1 - Concept Based Learning. Downstream: In water, the direction along the stream is downstream. Upstream: In water, the direction against the stream is upstream. Concept 1: If the speed of the boat in still water is \(u \) km/hr and the speed of the stream is \(v \) km/hr. Then, Speed downstream = (\(u + v \)) km/hr. Speed upstream = (\(u � v \)) km/hr. Example 1: A man row with a speed of 8 km/h in stil.
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