If a marathon runner runs a distance of 5 km (kilometers) in 45 minutes. What is his speed?

Answers

Answer 1

Given parameters:

Distance  = 5km

Time taken = 45 minutes

Unknown:

Speed  = ?

Solution:

Speed is a physical quantity.

It is given as;

   Speed  = [tex]\frac{distance}{time}[/tex]

Since the unknown is speed;

     convert the time given to hours;

         60min  = 1hr

         45min = [tex]\frac{45}{60}[/tex]   = [tex]\frac{3}{4}hr[/tex]

So, speed  = [tex]\frac{5}{\frac{3}{4} }[/tex]   = 5 x [tex]\frac{4}{3}[/tex]  

                        = [tex]\frac{20}{3}[/tex]km/hr


Related Questions

How many fewer immigrants came to the United States in 1931 than 1901 based on this graph?

a) 4 million
b) 5 million
c) 6 million
d) 10 million

Answers

Answer:

b) 5 million

Explanation:

Answer:

5 million

Explanation:

Which coastlines most closely match each other and are, therefore, used as evidence to support Wegener’s theory?

India and Eurasia
Australia and Africa
Africa and South America
Australia and North America

Answers

Answer:

Africa and South America

Explanation:

Answer: C. Africa and South America

Explanation: Edge2021

What do Jains believe about the universe?
A.
The universe is eternal.
B.
God created the universe.
C.
Liberated souls reside in the universe.
D.
The universe will collapse some day.

Answers

It’s A and it couldn’t be B because Jains do not believe the universe was created by a god of any sort

Answer: A.  The universe is eternal.

Explanation: In Jain cosmology, the universe is without beginning or end. Eternally, it passes through long cycles of progress and decline.

Explain how domesticating plants and animals changed the world. (Using ACE Response Technique)

Answers

Answer:

Domesticating plants made more food for the early humans. The early humans used this technique. This is how domesticating works, and how it helped people.

Hope this helps!

witch of the following statements about relegion in china is true

Answers

Answer:

it gave us corona

Explanation:

The Little Dipper is a group of stars. During the night the Little Dipper appears to change positions in the sky. Which of these statements best explains why the Little Dipper appears to change positions in the night sky? * A. Earth rotates on its axis. B. Earth revolves around the stars. C. The Little Dipper moves around the sun. D. The stars in the Little Dipper move in the sky. 2. Which of these changes on Earth would be likely if Earth were farther from the sun? *

Answers

Answer:

1. A. Earth rotates on its axis

2. If the earth were closer to the sun, the temperature would be much higher.

Explanation:

As the night passes we can see that there is a certain movement of the stars. Regarding the bear, we can see that it appears in different positions in different perspectives. This happens due to the rotation of the earth in relation to its own axis. The smaller bear is too far from the earth for the proper movement it represents to be perceived, so it is the movement of the earth that provides the displacement sensation of the small bear.

If the earth were closer to the xol, we would see a big change in its temperature. The land would become much hotter, and it may even be impossible to keep bodies of water and living beings on its surface.

Answer: It’s A

Explanation:

What is chemical weathering? Give an example.

Answers

Answer:

the chemical parts of lsomething

Explanation:

Chemical Weathering happens when water dissolves minerals in a rock that then produces new compounds. For example when water comes in contact with granite. Feldspar crystals inside the granite react chemically so it forms clay minerals. The clay weakens the rock, making it more likely to break.

Which statements about the Tupi in the 1500s are true? Choose all answers that are correct. They lived in the rain forests and along the coasts. They grew crops, such as corn and peanuts. They lived as nomads with no permanent dwellings. They hunted and gathered during the dry season.​

Answers

Answer:

Statements that are true about the Tupi is that they lived in the rain forests and along the coasts, and they grew crops, such as corn and peanuts.

Explanation:

The first option is correct because the Tupi inhabited pretty much all regions of Brazil, initially starting off in the tropical rain forests, but later moving and settling along the coastline of Brazil.

The second option is correct because the Tupi were skillful agriculturalists, and they were growing a wide variety of crops, including peanuts, corn, cassava, sweet potatoes, and many more.

The third option is not correct because the Tupi were people that had a sedentary lifestyle, with permanent buildings, and being engaged in agriculture.

The fourth option is not correct because the Tupi were producing a surplus of food which in turn enabled them to live in one place throughout the year and be well off, without the need for hunting and gathering.

The answer is they lived in the rain forests and along the coasts, and they grew crops, such as corn and peanuts.

Give an example of a coastline. :3 (pls help i need this asap

⊄∵⊕ω⊕∵⊅

Answers

Answer:An example of coastline is to ride a sailboat through the waters near a beach. An example of coastline is to sled down a hill. The edge of the land where it meets an ocean, sea, gulf, bay, or large lake. .

Explanation:

Which of the following diseases is often spread through unsafe public water sources

Answers

Answer: cholera

Explanation:

Aerial photographs most often are taken from __________.

A.
aircrafts
B.
hot air balloons
C.
satellites
D.
space shuttles

Please select the best answer from the choices provided
A
B
C
D

Answers

Answer:

B. hot air balloons

Explanation:

The answer is C. Satellites

2 The largest tropical desert in the world is​

Answers

He’s is right about

:

- 5,500 - 2,000

ℑ 8.54 . " " " ".ℑ 11 :- , ℭ, , , , , , , , , .

Which type of exchange is a form of nonverbal communication

Answers

Answer:    Facial expressions. The human face is extremely expressive, able to convey countless emotions without saying a word. ...

   Body movement and posture. ...

   Gestures. ...

   Eye contact. ...

   Touch. ...

   Space. ...

   Voice. ...

   Pay attention to inconsistencies.

Explanation: google

Using the population density map alone, explain the distribution of the world’s population.

Answers

Answer:

Population is a serious subject to be studied by all country. Population control helps saving the environment from destruction.  

The distribution of population differs in each region. Some area are sparsely populated and some are highly populated.

According to the world density map, world's largest population is present in Asia.

how does Russia taking over Crimea affect the peace of Europe

Answers

Answer:

The Ukrainians were mad at the Russians because they took over a part of land they thought was theirs. Then, other Europeans backed whoever they thought was right, and it disturbed the European peace because of the two sides backing each other.

Hope this helps you!

Who pioneered the use of mathematics in geographical measurements?

A.)Doreen Massey

B.) Ptolemy

C.) Abū Rayhān al-Bīrūnī

Answers

Answer:

Correct answer is B.) Ptolemy

Explanation:

B is the correct answer as it refers to a famous mathematician and a geographer from Alexandria, who created a famous Ptolemaic system, that later influenced many geographers, astronomers and mathematicians.

A is not correct as it refers to famous modern geographer Doreen Massey that lived in 20th Century.

C is also not correct Abū Rayhān al-Bīrūnī because it is the name of famous Islamic scholar from 11th Century.

Answer:

C) Abū Rayhān al-Bīrūnī

Explanation:

suggest why the algae bloom is around the edge of the sea, rather than spread all over it​

Answers

\Eventually, water at the surface is replaced by water that has risen, or upwelled, from the bottom to the surface somewhere else in the ocean. These upwellings bring nutrient-rich waters to the top. This increase in nutrients can trigger algae blooms.\

What strategy did trump use the most in the debate?

Answers

dOn'T LeT tHeM sPeAk AnD tHeY cAn'T WiN

wat is the chemical symbol of silver​

Answers

Answer:

AG

Explanation:

LOOK AT THE PERIODIC TABLE

I need help !!!!


What religion dominates Russia ?
A. Judaism
B. Christianity
C. Islam
D. Buddhism

Answers

Answer:

Orthodox Christianity

Explanation:

Orthodox Christianity is the dominant religion in Russia (as the colours show).

Hope this helps you!! :)

Analyze the map of Southern Africa below and answer the question that follows.

On the map above what is the name of the river at letter A?

A. The Nile river

B. The Zambezi river

C. The Congo River

D. The Malawi river

Please hurry thank u!

Answers

Answer:

C Is the answer

Explanation:

Your answer is C

it is

I don't get this question so someone pls help :)

Answers

Answer:

the answer is C (I think)

Explanation:

How are the Canadian cities of Toronto and Montreal different?

Answers

Both cities are located in two different states provinces namely Ontario and Quebec respectively. While Toronto is the capital of Ontario, Montreal is a major city in Quebec.

English is the major language of Toronto, whereas French is the major language of Montréal.

How did Ramses ll earn the title "Ramses the Great"?
O He built the Pyramids of Giza, which still stand today.
O He defeated the Hittites and signed the world's first known peace treaty.
O He brought about many religious changes, including the worship of just one god.
He was the first ruler to control the flooding of the Nile River, saving many lives.

Answers

Answer:

He defeated the Hittites and signed the world's first known peace treaty.

Explanation:

Ramesses II was a powerful pharaoh in Egypt. During his reign, Egypt expanded. This was brought about by Ramesses II's military campaigns that targeted geographical expansion and part of these was the retrieval of Egypt's territory which was claimed by the Hittites.

He had a constant battle with the Hittites that took many years, which almost defeated the Egyptians. However, in the end, Ramesses II remained victorious. In order to end such long conflict with the Hittites, Ramesses II entered into a "peace treaty" with them. This peace treaty is considered to be the first of its kind.

Answer: the second option is correct "He defeated the Hittites and signed the world's first known peace treaty."

Explanation: i got it correct for edgenuiy soc sci and the person above me is correct

Which generalization BEST describes the impact of world events on the price of oil?

A) An oil embargo produces high prices worldwide.
B) Political events have relatively little impact on price.
C) The price of oil spikes prior to and during times of war.
D) Economic crises tend to raise the price of oil gradually.​

Answers

Answer: C) The price of oil spikes prior to and during times of war.

(True or False) Most people throughout Central America today are considered Mestizos

Answers

The answer is true. 3/5 of the Central American population are considered Mestizos

SOMEONE PLS HELP LAST QUESTION AND ITS DUE IN 5 MINUTES PLS HELPWhat responsibility does the United States have to citizens of other countries?

Answers

Answer:

Respect and obey federal, state, and local laws. ... Pay income and other taxes honestly, and on time, to federal, state, and local authorities. Serve on a jury when called upon. Defend the country if the need should arise.

Explanation:

How do you do this and the answer

Answers

Choice 1
Explanation: 118 is congruent (equal) to Y being that it is on the opposite side and seems to have the exact measurements. That specific segment adds to 180, so if you do 180-118 you get 62, which has to be x.

what is the meaning of development?​

Answers

Answer:An event constituting a new stage in a changing situation

Explanation:

easiest 5 points u welcome

please help me fast and u get a cookie

Answers

Answer:A
Cotton gin is a machine used to remove seeds from cotton essentially faster production more money
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