Rapid Revision for CSIR NET Part A: Formula Sheets on Boat And Stream - Check Here!!!

By Astha Singh|Updated : February 3rd, 2022

CSIR NET Part-A Formula Sheet: The CSIR NET Examination takes up a lot of hard work and powerful strategies to Prepare Yourself for the examination. During the preparation, it is very important to have simple tricks that you can use to revise the topics without having to look into different places. These simple strategies can not only save your time but also helps you remember things easily. We at BYJU'S Exam Prep, are here to make your work easy, studies fun and provide you with the most authentic study material. so we have formulated a concept of a Formula Sheet where you can find all the important formulas from the different topics in one place. It will help you revise all of the important formulas at the last moment. The formula sheet will work as a time-saving revision tool that you can go through any time to boost your preparation. This CSIR NET General Aptitude Formula Sheet is designed by our experienced subject-matter experts. 

In this article, we will cover the CSIR NET General Aptitude Most Important Formulas of Boat And Stream. The aspiring CSIR candidates can go through all the important formulas of Boat And Stream for the last minute revision. Scroll down the full article to find out!

Most Important Formulas of Boat And Stream


The direction along the stream is known as downstream. Direction against the stream is known as upstream. The moving of water in a river or sea is known as a stream.


If speed of boat in still water is 'U' km/h & speed of stream is V km/h Then,

  • Speed Downstream = (U + V) km/hr
  • speed Upstream = (U – V) km/h     

If the speed downstream is 'a' km/h & the speed upstream is 'b' km/h Then,

  • Speed in still water = ½ (a+ b) km/h         
  •    Speed of stream =   ½ (a–b) km/h

Some more tips and tricks

Let's assume that a boy can row at a speed of A km/h in still water & he rows the same distance up & down in a stream that flows at a rate of B km/h. Then his average speed throughout the journey-
=   km/h

  • Let’s the speed of a boy in still water be A km/h and the speed of the stream be B km/hr. If he takes ‘X’ hours more upstream than to go downstream for the same distance. Then the distance= km
  • A boy can row a certain distance in still water at A km/hr. In a stream flowing at B km/hr, if it takes him t hours to row a place and come back, then the distance between two points =
  • A boy rows a certain distance downstream in t1 hours and returns the same distance upstream in t2 hours. If the speed of the stream is A km/hr, Then the speed of the boy in still water=

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