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Find the speed of the current and the speed of the boat in still water? | Yahoo Answers
HELLO EVERYONE today I'm #Creating #sea and #boat use box and box and box to create all. ha Speed Of The Boat In Still Water Is 15 Kilometre Per Hour Free ha so i was practicing #Creating sea suddenly idea pop up in my. It takes 3 hours to cover 45 km downstream. What is the time taken by the boat to cover the same distance upstream? (A) 4 hours (B) 3 hours (C) 5 hours (D) 6 hours I need explanation please. 1. See answer. abiramygupta is waiting for your help. Add your answer and earn points. dseema dseema Answer. 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.

This a very simple topic and mere require direct application of formulas to solve the question. However, many students find this topic confusing and find face difficulties in solving them. And, the reason for facing such hindrance is the understanding of the language of question. They are just Speed , Distance and Time questions in water rather with a slightly twisted language. Upstream : It means that you are moving in opposite direction from that in which river flows.

Example 1: The speed of a motor boat is that of the stream as The boat goes along with the stream in 5 hours and 10 minutes. How much time will it take to come back? What is the speed of the boat in still water and the speed of the stream?

Speed-based questions also include one more type in which time taken and distance covered is given along with speed of stream is given then you can find the speed of the boat in still water using following formula:. Example 3: A boat take 8 hours to cover a distance while traveling upstream, whereas while traveling downstream it takes 6 hours. What is the speed of the boat in still water? Sol Again direct use of the above formula and you are done. Example 4: A boat, while going downstream in a river covered a distance of 50 miles at an average speed of 60 miles per hour.

While, returning because of water resistance, it took 1 hour 15 minutes to cover the same distance. What was the average speed during the whole journey? Sol In this problem we cannot directly use the formula first we need to find the upstream speed and speed in still water.

This can be done as follows,. Example 5: A person challenged himself to cross a small river and back. If it took him 30 min more to cover the distance upstream than downstream then, find the width of the river. If a boat takes t hours to row to a place and return back, then the distance between the two places can be estimated through.

If in a river running at 1. Sol To solve this question we will simply use the formula given above. In this case, t is 50 minutes b is 1. The above examples are just few simple and basic application of the methods stated along with them. These formulas can come in handy and can save lot of your time in exam. You can find questions and problems involving simultaneous use of more than one formula at times.

But if you know the correct utilization of them you can solve any problem easily. And, this smoothness comes with practice so the more you varied questions you try the more you will learn and become better at solving them. So, keep practicing! Enroll Now Rs. Your email address will not be published. This site uses Akismet to reduce spam.

Learn how your comment data is processed. Downstream : It means moving along in the direction of the flow of the stream. There can also be other questions in calculation of time and some of them can be easily be solved using the formulas given below. Let d the distance. Sol This question requires direct use of the formula mentioned earlier. Average Speed-based question: As the name tells, we need to calculate the average speed of the boat while you are upstream and downstream speed.

Now we are in stage of using the average speed formula. Distance based question: In these kind, you have to calculate distance travelled by the boat when time, speed of still water and stream is given. There can be two different formulas to calculate the distance for two distant cases. If you Like this post then share it! Leave a Reply Cancel reply Your email address will not be published.

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