A car started from rest and moved along a straight road with constant acceleration of 2.0m/s-² for 6s.Calculate the speed of the car 6s after starting to move.​

Answers

Answer 1

Answer:

The speed of the car 6 s after starting to move is 12 m/s.

Explanation:

A car started from rest and moved along a straight road with constant acceleration of [tex]2\ m/s^2[/tex] for 6 seconds.

It is required to find the speed of the car 6 s after starting to move. Let v is the final speed of the car.

The relation between speed, acceleration and time is given by :

[tex]v=u+at[/tex]

u = 0

[tex]v=at\\\\v=2\ m/s^2\times 6\ s\\\\v=12\ m/s[/tex]

So, the speed of the car 6 s after starting to move is 12 m/s.


Related Questions

How were lion fish introduced to the areas around Florida

Answers

Answer:

I think this will answer your question. This is information is not mine and this rightfully belongs to columbia.edu.

This brightly colored fish is native to the Indo-Pacific from Australia north to southern Japan and south to Micronesia.  The lionfish is usually found in coral reefs of tropical waters, hovering in caves or near crevices.  Native regions as well as Savannah, Georgia; Palm Beach and Boca Raton, Florida; Long Island, New York; Bermuda and possibly Charleston. In southern Florida and off the coast of the Carolinas in early to mid 1990s.

Answer:I really don't know sorry

Explanation:

20 pts: Please write a paragraph about the big bang theory

Answers

The Big Bang is a scientific theory about how the universe started, and then made the stars and galaxies we see today. The Big Bang is the name that scientists use for the most common theory of the universe,from the very early stages to the present day.

The universe began as a very hot, small, and dense superforce (the mix of the four fundamental forces), with no stars, atoms, form, or structure (called a "singularity"). Then about 13.8 billion years ago,space expanded very quickly (thus the name "Big Bang"). This started the formation of atoms, which eventually led to the formation of stars and galaxies. It was Georges Lemaître who first noted (in 1927) that an expanding universe could be traced back in time to an originating single point. The universe is still expanding today, and getting colder as well.

As a whole, the universe is growing and the temperature is falling as time passes. Cosmology is the study of how the universe began and its development. Scientists who study cosmology have agreed that the Big Bang theory matches what they have observed so far.

Fred Hoyle called the theory the "Big Bang" on his radio show. He did not believe the Big Bang was correct. Scientists who did not agree with him thought the name was funny and decided to use it.

Scientists base the Big Bang theory on many different observations. The most important is the redshift of very far away galaxies. Redshift is the Doppler effect occurring in light. When an object moves away from Earth, its color rays look more similar to the color red than they actually are, because the movement stretches the wavelength of light given off by the object. Scientists use the word "red hot" to describe this stretched light wave because red is the longest wavelength on the visible spectrum. The more redshift there is, the faster the object is moving away. By measuring the redshift, scientists proved that the universe is expanding, and they can work out how fast the object is moving away from the Earth. With very exact observation and measurements, scientists believe that the universe was a singularity approximately 13.8 billion years ago. Because most things become colder as they expand, scientists assume that the universe was very small and very hot when it started.

Other observations that support the Big Bang theory are the amounts of chemical elements in the universe. Amounts of very light elements, such as hydrogen, helium, and lithium seem to agree with the theory of the Big Bang. Scientists also have found "cosmic microwaves background radiation". This radiation is known as radio waves, and they are everywhere in the universe. This radiation is now very weak and cold, but a long time ago it was very strong and very hot.

It can be said that time had no meaning before the Big Bang. If the Big Bang was the beginning of time, then there was no universe before the Big Bang, since there could not be any "before" if there was no time! Other ideas state that the Big Bang was not the beginning of time 13.8 billion years ago. Instead, some believe that there was a completely different universe before the Big Bang, and it may have been very different from the one we know today.

Nonetheless, in November 2019, Jim Peebles, awarded the 2019 Nobel Prize in Physics for his theoretical discoveries in physical cosmology.noted, in his award presentation, that he does not support the Big Bang Theory, due to the lack of concrete supporting evidence, and stated, "It's very unfortunate that one thinks of the beginning whereas in fact, we have no good theory of such a thing as the beginning."

whoever answers correctly first will get brainiest
whats my middle name....?

clues:

a_n_l i_ e

3 missing letters

fill in the blanks! hehe

Answers

Answer:

annalise

Explanation:

::::::::::)))))))))

8000 kg engine pulls a train of 5 wagons, each of 2000 kg, along a horizontal track. If the engine exerts a force of 40000 N and the track offers a friction force of 5000 N, then calculate the net accelerating force

Answers

Answer:

The net force of engine on total mass of train is 35000 N

The net acceleration is 1.944 m/s²

Explanation:

Here we have;

Mass of each wagon of train = 2000 kg

Number of wagons = 5

Total mass of wagons = 5 × 2000 = 10000 kg

Mass of engine = 8000 kg

Total mass, m of train (engine plus wagons) = 10000 + 8000 = 18000 kg

Force exerted by train = 40000 N

Friction force due to the railway track = 5000 N

Net force, F of engine on total mass of train = 40000 - 5000 = 35000 N

Formula for force, F = Mass, m × Acceleration, a  

35, 000 = 18,000 × a

a = 35,000/18,000 = 35/18 m/s²

[tex]a = 1\tfrac{17}{18} \ m/s^2[/tex]

The net acceleration = 1.944 m/s².

scientific notation for 836

Answers

Answer:

8.36e2

Explanation:

Use a scientific calculator

Its notation is written as :

8.36 x 10^2

What type of phase change occurs when water vapor in the atmosphere changes to liquid water in clouds?

Answers

Answer:

condensation, the process of changing from a gas to a liquid

PLEASE HELP ASAP!!!!!!!!!!!!

Answers

The first choice on the list is the correct one.

Un recipiente contiene 2,5 moles de gas propano. Calcula, utilizando la definición de mol, cuántas moléculas de propano (C3H8) contiene ese recipiente.


POR FAVOR NO LO ENTIENDO Y CON SUS OPERACIONES PLISS

Answers

Answer:

1.505*10^{24}  molecules

Explanation:

The number of molecules is independent of the subtance, and only depends on the number of moles.

To calculate the number of molecules in a substance with n moles you use the following formula:

[tex]m=nN_A[/tex]

m: number of molecules

NA: Avogadro's number = 6.02*10^23 molecules/mol

n: moles of the substance = 2.5 mol

You replace the values of n and NA in the equation for m and you obtain:

[tex]m=(2.5mol)(6.02*10^{23}molecules/mol)\\\\m=1.505*10^{24}\ molecules[/tex]

hence, the number of molecules is 1.505*10^24

A vector points -1.55 units
along the x-axis, and 3.22 units
along the y-axis.
Find the direction of the vector.

Answers

Answer:[tex]\theta =64.29^{\circ}[/tex]

Explanation:

Given

Vector Points -1.55 units along x-axis

i.e. 1.55 units along negative x-axis

and 3.22 units along Y-axis

Direction of vector

[tex]\tan \theta =\frac{3.22}{1.55}[/tex]

[tex]\theta =tan ^{-1}(2.077)[/tex]

[tex]\theta =64.29^{\circ}[/tex]

Where [tex]\theta [/tex] is the angle made by vector with x-axis as shown in the diagram

Answer:

The answer is 115.70

Explanation:

Wolves, which are top predators, were eliminated from Yellowstone National Park in the 1930s. In 1995, wolves were reintroduced into Yellowstone. During the period in which wolves were absent from Yellowstone, which MOST likely occurred?
A. an increase in competition for food resources among small prey
B. a greater opportunity for primary producers to flourish
C. an increase in the population of tertiary consumers
D. a greater balance of predator-prey relationships

Answers

Answer:

The answer is E

Explanation:

Wolves died off from the rona virus back in the 1930s so when they came back they brought C- 19 with them

Nitrogen-14 has 7 protons. How many neutrons does it have?

Answers

Answer:

7

Explanation:

Using information found on the Periodic Table of Elements:

Nitrogen contains 7 protons, 7 neutrons, and 7 electrons.

..

Atomic number is 7

Atomic mass is 14

The mass number is the sum of protons and neutrons in the nucleus.

=> You can subtract the atomic number from the mass number to find the number of neutrons.

how do braces protect you while doing sports

Answers

Answer:

they don't, if you get hit in the face then the brackets are gonna rub up against the inside of your mouth then you'll bleed

Explanation:

a circuit is connected to 8 volt battery and it has 2 amperes of current flowing through the wires.What is the resistance of the circuit

Answers

Answer:

4 ohms

Explanation:

Current = Voltage/resistance

2 = 8/R

2R = 8

R = 4

can Somebody Explain Please
Introduction to Newton's law of gravitation

Answers

Answer: so basically, Newtons Law states that every particle attracts every other particle in the universe with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Explanation: newtons law simplified in my opinion is a physical law that describes the attraction between two objects with mass.

hope this helps.

Answer:

Explanation:

she rieat

What are the four theories of the origin of the moon?

Answers

1. Fission theory - Earth may have been spinning so fast that a part of our planet may have spun off into space, but kept tethered by Earth’s gravity.
2. Capture theory - the moon originated elsewhere in the Milky Way.
3. Co-accretion theory - The moon and the Earth formed together when orbiting a black whole.
4. Giant impact hypothesis - A planetary object impacted Earth, causing a portion of the plant to come off and become the moon.
1. Fission theory
2.capture theory
3. Co-accretion theory
4. Giant impact hypothesis

A wave of wavelength 0.3 m travels 900 m in 3.0 s. Calculate its frequency.

Answers

Answer: 1000 Hz

Explanation:

You can calculate frequency by dividing velocity by wavelength

Frequency = velocity/wavelength

Find velocity first.

900 m/3 s = 300 m/s

Plug values in to find frequency.

F = (300 m/s)/0.3 m

F = 1000 Hz

Adam observed properties of four different waves and recorded observations about the frequency and volume of each one in his chart. Which statement could Adam declare based on the data in the table

Answers

I believe this answer is B but my believing sucks so

En un proceso isobárico, la presión del gas es de 105 Pa. Halle el desplazamiento del pistón, cuya área es de 0,4 m2, cuando el gas desarrolla un trabajo de 8 x 104 J

Answers

Answer:

The displacement of the piston is 1904.76 m

Explanation:

Here we have an isobaric or constant pressure process, therefore;

Work done, W = P × (V₂ - V₁)

Where:

W = 8 × 10⁴ J

P = Pressure of the gas = 105 Pa

V₁ = Initial volume of the cylinder of the piston

V₂ = Final volume of the cylinder of the piston

We note that volume of the cylinder of the piston = Base area, A × h

Therefore;

V₁ = A × h₁

V₂ = A × h₂

Which gives;

V₂ - V₁ = A × h₂ - A × h₁ = A×(h₂ - h₁)

Where:

A = Base area of the piston = 0.4 m²

h₂ - h₁ = Displacement of the piston

∴ 8 × 10⁴ J = 105 Pa × (V₂ - V₁) = 105 Pa × 0.4 m² × (h₂ - h₁)

h₂ - h₁ = (8 × 10⁴ J)/(105 Pa × 0.4 m²)

h₂ - h₁ = 1904.76 m

Hence the displacement of the piston = 1904.76 m.

A horizontal line on a phase-change graph indicates

Answers

Answer:

A horizontal line on a phase change graph means there has been

no change. Often longer periods of research are needed to see

significant change.

How many windows should the real tree house have

Answers

Answer:

88

Explanation:

Answer:

2

Explanation:

88 was wrong and the answer then said 2

You get yourself a new mirror so that you can admire yourself in the morning. When you open the box, you notice that it is only ½ your height. You think to yourself "This is no good! Now I can't see all of me!" You put it up anyway and realize that you can see your entire body in it. How can this be?

Answers

Answer:

Because you stand at a distance from the mirror at which your entire body shows.

Explanation:

Since the mirror is a plain mirror, the distance of the object from the mirror is also the distance of the image from the mirror. Also since the magnification is 1 for a plane mirror because the height of the image equals the height of the object. Since the magnification always equals 1, for you to be able to see your entire body, you must stand at a distance from the mirror such that your height equals the image height.

Answer: By keeping a distance away from the mirror.

Explanation:

If it's a plane mirror, it's possible to see your entire body by keeping distance away from the mirror. The distance of the object away from the mirror is equal to the distance of the image away from the mirror.

please answer I'll give brainlist
Assuming the sound wave moves with the speed of air ( 340 m/s), what is the wavelength of the wave?

Answers

Answer:

suppose frequency of sound = 100Hz

then wavelength = speed/ frequency

= 340/100= 3.4 m

A charge of 80 coulombs passes through a circuit in 5 seconds. What is the current through the circuit?

Answers

Answer:

I = 16amp

Explanation:

Charge coulomb ( Q ) = It

Where I =current in ampere

t = time = 5 seconds

80 = I × 5

I = 80/5

I = 16amp

The current through the circuit will be I = 16amp

what is polarization​

Answers

division into two sharply contrasting groups or sets of opinions or beliefs.

When you have two materials with the same index of refraction, it means that

Answers

Answer:

When you have two materials with the same index of refraction, it means that if they are touched by a ray of light it won't have a chance, and its form would prevail.

Explanation:

The reason behind this is that in the first place. When light passes through an object of certain refraction it is modified from its natural state, allowing it to change in color to the human eye or many other effects in other perceptive elements. However, when the same light passes through two objects with the same refraction due to their physical characteristics, it doesn't change because once it comes out of the first one it will suffer the same effect from the last one. For it to change the refraction would have to be higher or lower. Then it would be modified. The reason is because the dimensions are not modified. Because at some point the ray of light has to come out of the first one to enter the second one.

Is jump rope a sport.

Answers

Answer:

yes

Explanation:

Answer: Yes
Explanation:.

what is a Rube Goldberg machine and show me a pic? PLEASE.

Answers

Answer:

This picture is just one example of a Rube Goldberg machine. It's sort of like a chain reaction. There are a lot of cool videos you could look up on you tube that demonstrate what they are.

Explanation:

How does the speed ratio change as you switch between different gears on a bicycle, and how does this affect the force you need to pedal the bicycle?

Answers

An average cyclist generates about 183 watts while doing 19 mph or 30.4 kph. Power = force × velocity. Force of a pedalling applied by a human for achieving 30.4 kph = 183/8.44 = 21.68 newtons. This is for upright bicycles.

Se dispone de dos vasos con agua a 20 grados y queremos calentarlo hasta alcanzar 50 grados. Si el primero contiene 0,5l y el segundo, 750ml, cual de los dos requerirá mas cantidad para alcanzar la temperatura deseada? Porque?

Answers

Answer:

The cup with 0.5L

Explanation:

To know what amount of water you take into account the specific heat of the water. The specific heat of water is:

[tex]c_{water}=4186\frac{J}{kg\°C}[/tex]

Thus, 4186 J of energy are needed to icrease the temperature of 1 kg water in 1°C. Then, more grams of water will need more energy.

You have that one cup has 0.5 L and the other one has 750mL = 0.75L

The second cup of water will need more heat because the amount of water contained in the second cup is greater than in the first cup with 0.5L

Can someone please explain these or help answer them? ​

Answers

Answer:

41.57.

Explanation:

Sometimes if you type in google "area of a regular hexagon, it will give you a calculator you can use to solve your math questions.

Answer:41.57

Hope this help
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