Physics Middle School

Mahiya and Mrinmoy are in a relay around a square field with each side of length 60m. First, Mahiya runs at a speed of 6 ms−1 for 60m to pass a baton to Mrinmoy. Then Mrinmoy runs 120m at 4ms−1 while Mahiya runs through the field to reach the other corner. Then Mrinmoy passes the baton. But Mahiya is now tired since she has been constantly running. So, she only runs at 3ms−1 for the final 60m. What is the average speed of the baton in ms−1?

Answers

Answer 1

The average speed of the baton can be determined by dividing the total distance travelled by the total time taken for that travelling.

[tex]Average\ Time = \frac{Total\ Distance}{Total\ Time}[/tex]

First, we will find the total distance, by adding the distances travelled by both Mahiya and Mrinmoy, while carrying the baton.

[tex]Total\ Distance = Distance\ Travelled\ by\ Mahiya\ to\ pass\ the\ baton\ to\ Mrinmoy\ +\ Distance\ Travelled\ by\ Mrinmoy\ to\ pass\ the\ baton\ to\ Mahiya\ +\ Final\ Distance\ Travelled\ by\\ Mahiya[/tex]Total Distance = 60 m + 120 m + 60 m = 240 m

Now, we will find the total time taken for this travelling. To find out the total time we will divide each distance travelled by the speed of the traveller during that distance:

[tex]Total\ Time = \frac{60\ m}{6\ m/s}+\frac{120\ m}{4\ m/s}+\frac{60\ m}{3\ m/s}\\\\Total\ Time = 10\ s\ +\ 30\ s\ +\ 20\ s[/tex]

Total Time = 60 s

Now, we finally find the average speed of the baton by using the formula:

[tex]Average\ Time = \frac{Total\ Distance}{Total\ Time}\\\\Average\ Time = \frac{240\ m}{60\ s}[/tex]

Average Speed = 4 ms⁻¹

Learn more about average speed here:

https://brainly.com/question/12322912?referrer=searchResults

Related Questions

Why is it possible for railway tracks to buckle even though there are gaps in them?​

Answers

These gaps which are of the order of a few millimeters, are provided to allow room for the rails to expand the rise in temperature due to the atmospheric temperature as well as the friction caused by running of train. All materials expand when heated and contract when cooled. The extent of expansion and contraction is quite low to be noticed by people or make much difference in most situations. However, since each section of the rail is very long, the expansion due to heating is significant, and unless space is provided for expansion of rails, the rails will bend to accommodate the increased length. This will make the railway unfit for running of trains.

Answer: the tracks will buckle under the force.

Explanation: Heat-related expansion places a lot of stress on the ties, ballasts, and rail anchors that keep the tracks fixed to the ground.

Compare and contrast intensive and extensive physical properties, and give 3 examples of each.

Answers

Answer:

Intensive properties do not depend on the quantity of matter. Examples include density, state of matter, and temperature. Extensive properties do depend on sample size. Examples include volume, mass, and size.Intensive properties do not depend on the quantity of matter. Examples include density, state of matter, and temperature. Extensive properties do depend on sample size. Examples include volume, mass, and size.

Explanation:

Volume, mass, and size

All of these are very important parts of studying physics EXCEPT

1. describing the organization of the universe
2. understanding natural laws
3. memorizing complicated explanations
4. deducing and applying natural laws

Answers

Answer:

4. deducing and applying natural laws

4 since i am right.
Other Questions
The largest third party with over 75,000 followers? expalin singal blind Please help explanation if possible A telephone call arrived at a switchboard at random within a one-minute interval. The switch board was fully busy for 10 seconds into this one-minute period. What is the probability that the call arrived when the switchboard was not fully busy compare traditional technology with modern technology According to the research presented by the author, it can beconcluded that young drivers get into more accidents than olderdrivers because O They are too inexperienced to drive.O they are nervous about driving.O they drive too slowly under supervision.Othey drive too fast. which of the following is a major determinant of the distribution pattern of a population? 1 social interactions2 habitat area3 rate of population growth 4 the ages of the individuals For an ordered pair left parenthesis x comma y right parenthesis in a relation, the x element represents the 10. At 573K, NO2(g) decomposes forming NO and O2. The decomposition reaction is second order in NO2 with a rate constant of 1.1 M-1s-1. If the initial concentration of NO2 is 0.056 M, how long will it take for 75% of the NO2 to decompose who is the prime minister of nepal how each of the major religions began Which statement summarizes this passage about evaluating health information?Scientific studies have limits.Internet sites interpret scientific data.Secondary sources lack medical expertise.Newspaper articles are reliable medical sources. what should we do to protect nature ?make a list of at least five suggestion ( 2 + 3 ) ^-1 x ( 2 ^-1 + 2^-1 ) What other rights were given to British citizens ? This artist is famous for his structural use of color and brushwork that appeals to the intellect, and a solidity of composition enhanced by a fluid application of pigment that delights the senses. He was probably the most influential single artist on the early 20th century. Who was he Find the remainder when f(x) = 2x3 + x2 - 4x + 1 is divided by x + 3. write a program in python to add two matrices...... a test has 10 multiple-choice questions with 6 choices each, followed by 35 true/false questions. if a student guesses on each equation, how many ways can he answer the questions on the test please help me with this question!