A 1000 kg car accelerates from rest at a rate of 10 m/s² for 3 seconds. A) what is the final velocity of the car?

Answers

Answer 1

Answer:

Explanation:

We don't need the mass of the car in the equation to solve for final velocity, since the values given for the acceleration and the time it took to accelerate to that velocity are given. The equation we need is the one for acceleration, which is

[tex]a=\frac{v_f-v_0}{t}[/tex] We are solving for final velocity, we know the initial velocity is 0 (starting from rest), and the time to complete this acceleration (10 m/s/s) is 3 seconds:

[tex]10=\frac{v_f-0}{3}[/tex] which is the same thing as saying

[tex]10=\frac{v}{3}[/tex] so

v = 30 m/s


Related Questions

Durante su práctica un atleta recorre en línea recta una distancia de 900m en un tiempo de 170 segundos. ¿Cuál fue su rapidez promedio?

Answers

Answer:

Velocidad promedio = 5.29 m/s

Explanation:

Dados los siguientes datos;

Distancia = 900 m

Tiempo = 170 segundos

Para encontrar la velocidad media;

La velocidad se puede definir como la distancia recorrida por unidad de tiempo. La velocidad es una cantidad escalar y, como tal, tiene magnitud pero no dirección.

Matemáticamente, la velocidad viene dada por la fórmula;

[tex] Velocidad = \frac{distancia}{tiempo}[/tex]

Sustituyendo en la fórmula anterior;

[tex] Velocidad = \frac{900}{170}[/tex]

Velocidad = 5.29 m/s

Por lo tanto, la velocidad promedio del automóvil es 5.29 metros por segundo.

when baking soda is added to a solution of citric acid, the temperature of the solution drops.

Answers

Answer:

i dont know guy sorry ha babu

1.12kg ball rolls forward with a net acceleration of 1.11ms2. What is the net force on the ball?​

Answers

Explanation:

Force = Mass × Acceleration

→ F = (1.12 × 1.11) N

F = 1.2432 N

a baseball player hits a ball with 400 n of force.how much does the ball exert on the bat

Answers

Answer:

The ball exerts a force of 400 N on the bat.

Explanation:

Given that,

A baseball player hits a ball with 400 N of force.

We need to find the force the ball exert on the bat.

We know that,

According to Newton's third law, when object 1 exerts a force on an object 2, then object 2 will exert a force on object 1 but in opposite direction.

So, the ball exerts a force of 400 N on the bat.

Which instrument changes kinetic energy into electrical energy?

electric motor

hair drier

electric bell

dynamo​

Answers

Answer:

Dynamo

Explanation:

As we all know, there are dynamos in bicycles. When we paddle the cycle, the wheels of the cycle rotates by generating kinetic energy. When the wheels rotate, the dynamo starts to rotate. This makes the motor inside the dynamo rotates and generate electrical energy.

Una prenda de 320gramos de ropa gira en el interior de una lavadora si dicha lavadora tiene 40 cm y gira con una frecuencia de 4 hz halla el periodo la velocidad angular la fuerza con la que gira la prenda y la velocidad lineal de la lavadora

Answers

Answer:

Período del tambor: [tex]T = 0.25\,s[/tex], fuerza sobre la prenda: [tex]F \approx 80.852\,N[/tex], velocidad lineal del tambor: [tex]v \approx 10.053\,\frac{m}{s}[/tex], velocidad angular del tambor: [tex]\omega \approx 25.133\,\frac{rad}{s}[/tex].

Explanation:

La expresión tiene un error por omisión, su forma correcta queda descrita a continuación:

"Una prenda de 320 gramos de ropa gira en el interior de una lavadora si dicha lavadora tiene un radio de 40 centímetros y gira con una frecuencia de 4 hertz. Halle a) el período, b) la velocidad angular, c) la fuerza con la que gira la prenda y d) la velocidad lineal de la lavadora."

El tambor gira a velocidad angular constante ([tex]\omega[/tex]), en radianes por segundo, lo cual significa que la prenda experimenta una aceleración centrífuga ([tex]a[/tex]), en metros por segundo al cuadrado. En primer lugar, calculamos el período de rotación del tambor ([tex]T[/tex]), en segundos:

[tex]T = \frac{1}{f}[/tex] (1)

Donde [tex]f[/tex] es la frecuencia, en hertz.

([tex]f = 4\,hz[/tex])

[tex]T = \frac{1}{4\,hz}[/tex]

[tex]T = 0.25\,s[/tex]

Ahora determinamos la fuerza aplicada sobre la prenda ([tex]F[/tex]), en newtons:

[tex]F = m\cdot a[/tex] (2)

[tex]F = \frac{4\pi^{2}\cdot m \cdot r}{T^{2}}[/tex] (2b)

Donde:

[tex]m[/tex] - Masa de la prenda, en kilogramos.

[tex]r[/tex] - Radio interior del tambor, en metros.

([tex]m = 0.32\,kg[/tex], [tex]r = 0.4\,m[/tex], [tex]T = 0.25\,s[/tex])

[tex]F = \frac{4\pi^{2}\cdot (0.32\,kg)\cdot (0.4\,m)}{(0.25\,s)^{2}}[/tex]

[tex]F \approx 80.852\,N[/tex]

La velocidad lineal de la lavadora es:

[tex]v = \frac{2\pi\cdot r}{T}[/tex] (3)

([tex]r = 0.4\,m[/tex], [tex]T = 0.25\,s[/tex])

[tex]v = \frac{2\pi\cdot (0.4\,m)}{0.25\,s}[/tex]

[tex]v \approx 10.053\,\frac{m}{s}[/tex]

Y la velocidad angular del tambor de la lavadora:

[tex]\omega = \frac{2\pi}{T}[/tex]

([tex]T = 0.25\,s[/tex])

[tex]\omega = \frac{2\pi}{0.25\,s}[/tex]

[tex]\omega \approx 25.133\,\frac{rad}{s}[/tex]

please I need the answer right now will mark you brainliest ​

Answers

Answer:

Explanation:

what do u need help with

Answer:

that's for frequency other answers are coming soon

When do we have positive/negative and zero acceleration.Write down the terms..................pls help mee

Answers

We have negative acceleration when an object projected upwards, while positive acceleration is a free fall.

Answer:

Positive acceleration is when an object is increasing its velocity, speeding up.

Negative acceleration is when an object is decreasing its velocity, slowing down from it’s motion.

Zero acceleration is when an object is either at rest or moving without speeding up or slowing down, in a constant way.

why are circuit breakers used in parts of national grid ?

Answers

Answer:

To protect control circuits or small devices with insufficient cutting power

Explanation:

What happens when two polarizers are placed in a straight line, one behind the other?

A. They allow light to pass only if they are polarized in exactly the same direction.

B. They block all light if they are polarized in exactly the same direction.

C. They allow light to pass only if their directions of polarizations are exactly 90° apart.

D. They block all light if their directions of polarizations are exactly 90° apart.

E. They block all light If their directions of polarizations are either exactly the same or exactly 90° apart.

Answers

I’m not sure but I think the answer is d but I’m not that sure

How does the temperature affect the speed of sound?

Answers

Explanation:

The relation between the speed of sound and the temperature is direct. As the temperature increases, the speed of sound also increases. If the substance is heated up, its molecules moves faster. As a result they collide faster and hence the speed increases. There is a relation between the speed of sound and the temperature i.e.

[tex]v=331+0.61T[/tex]

Hence, this is the required solution.

what happens if a voltmeter is connected in series with other components of the circuit (i.e , ammeter, cell, battery, resistor and wires). Why is it so? ​

Answers

Answer:the voltmeter measures the potential difference of the circuit,. Voltmeter is a device used to measure potential difference.

Explanation:

This circuit has five bulbs (A, B, C, D, and E). Select which bulbs would turn off if bulb C was unscrewed.

Answers

Answer:

C, A and E

Explanation:

In theory you always assume that the prostive is going to the negtive and since C, A and E are in series they all will turn off will turn off

Express 0.00005 s in µs

Answers

Answer:

0.00005 second =

50 microseconds

Time

0.00005

Second

50

Microsecond

A sled with mass 11.00 kg moves in a straight line on a frictionless horizontal surface. At one point in its path, its speed is 4.00 m/s; after it has traveled a distance 3.00 m beyond this point, its speed is 7.00 m/s. Use the work-energy theorem to find the force acting on the sled, assuming that this force is constant and that it acts in the direction of the sled's motion.

Answers

Answer:

The magnitude of the force acting on the sled is 60.5 newtons.

Explanation:

The Work-Energy Theorem states that the work done by the external force applied on the sled ([tex]W[/tex]), in joules, is equal to the change of its translational kinetic energy ([tex]\Delta K[/tex]), in joules:

[tex]W = \Delta K[/tex] (1)

By definitions of work and translational kinetic energy we expand the equation above:

[tex]F\cdot s = \frac{1}{2}\cdot m\cdot (v_{2}^{2}-v_{1}^{2})[/tex] (1b)

Where:

[tex]F[/tex] - External force applied on the sled, in newtons.

[tex]s[/tex] - Travelled distance, in meters.

[tex]v_{1}, v_{2}[/tex] - Initial and final velocities, in meters per second.

If we know that [tex]m = 11\,kg[/tex], [tex]v_{1} = 4\,\frac{m}{s}[/tex], [tex]v_{2} = 7\,\frac{m}{s}[/tex] and [tex]s = 3\,m[/tex], then the external force applied on the sled is:

[tex]F = \frac{m\cdot (v_{2}^{2}-v_{1}^{2})}{2\cdot s}[/tex]

[tex]F = \frac{(11\,kg)\cdot \left[\left(7\,\frac{m}{s} \right)^{2}-\left(4\,\frac{m}{s} \right)^{2}\right]}{2\cdot (3\,m)}[/tex]

[tex]F = 60.5\,N[/tex]

The magnitude of the force acting on the sled is 60.5 newtons.

mechanical energy that has been "lost" to friction has actually been destroyed.

Answers

Answer:

Yes

Explanation:

The friction is bigger than the mechanical energy so it kind off takes over the mechanical energy. but if the friction decreases mechanical energy can work on the object again

The pressure difference, , across a partial blockage in an artery (called a stenosis) is approximated by the equation where is the blood velocity, the blood viscosity , the blood density , the artery diameter, the area of the unobstructed artery, and the area of the stenosis. Determine the dimensions of the constants and . Would this equation be valid in any system of units

Answers

The question is incomplete. The complete question is  :

The pressure difference, Δp, ac[tex]K_u[/tex]ross a partial blockage in an artery (called a stenosis) is approximated by the equation :

[tex]$\Delta p=K_v\frac{\mu V}{D}+K_u\left(\frac{A_0}{A_1}-1\right)^2 \rho V^2$[/tex]

Where V is the blood velocity, μ the blood viscosity {FT/L2}, ρ the blood density {M/L3}, D the  artery diameter, [tex]A_0[/tex] the area of the unobstructed artery, and A1 the area of the stenosis.  Determine the dimensions of the constants [tex]K_v[/tex] and [tex]K_u[/tex]. Would this equation be valid in any  system of units?

Solution :

From the dimension homogeneity, we require :

[tex]$\Delta p=K_v\frac{\mu V}{D}+K_u\left(\frac{A_0}{A_1}-1\right)^2 \rho V^2$[/tex]

Here, x means dimension of x. i.e.

[tex]$[ML^{-1}T^{-2}]=\frac{[K_v][ML^{-1}T^{-1}][LT^{-1}]}{[L]}+[K_u][1][ML^{-3}][L^2T^{-2}]$[/tex]

                    [tex]$=[K_v][ML^{-1}T^{-2}]+[K_u][ML^{-1}T^{-2}]$[/tex]

So, [tex]$[K_u]=[K_v]=[1 ]=$[/tex] dimensionless

So, [tex]K_u[/tex] and [tex]K_v[/tex]  are dimensionless constants.

This equation will be working in any system of units. The constants [tex]K_u[/tex] and [tex]K_v[/tex] will be different for different system of units.

How can you increase efficiency of a simple machine??​

Answers

Answer:

Efficiency can be increase by using rollers in conjunction with the inclined plane. Wedge. The wedge is an adaptation of the inclined plane. It can be used to raise a heavy load over a short distance or to split a log.

Explanation:

Hope it helps

quicklime which is calcium oxide, is made by heathig limestone in a furnace as per the equation :
CaCO3(s)CaO(s)+CO2
7.00Kg of calcium oxide was formed. what mass of calcium carbonate was heated?

Answers

Answer:

h2 PRD algo trata gevbjjgcvnkoytewxc.

Answer:

12.5kg

Explanation:

The process is explained in the paper

Describe the difference between a sidereal day and a solar day.

Answers

Answer:

a sidereal day is the time it takes for the earth to rotate about it axis so that the distant star appears In the same position in the sky while a solar day is the time it takes for the earth to rotate about it axis so that the sun appears in the same position in the sky

When playing a game of disc golf, each throw to your target is considered to be a O Point O Stroke O Hit O Toss​

Answers

Answer:

an o point i think

Explanation:

Which of the following is NOT a type of satellite?
a. a baseball thrown from pitcher to catcher

b. a rice bag being thrown towards a cornhole
c. a paper airplane being thrown
d. a jet ski tied to a dock

Answers

D. A jet ski tied to a dock

Write the equation which links gravitational field strength,gravitational potential energy,height and mass

Answers

Answer:

PE = mgh

Explanation:

PE is potential energy

m is mass

g is gravitational field strength

h is height

ΡΟ. . When preparing for any of the golf variation games (golf foot golf, disc golf), a person should consider the following before they start.
O Distance
O Terrain
O Wind Speed
O All of the above​

Answers

Answer:

All of the above

Explanation:

To ensure the ball go to where we expected it go

help me with this please​

Answers

Answer:

Family

1. Definition of a family

A family is a group of people living together in a home related by blood, marriage or adoption.

2. Two function of the family are;

socialization for the children in the family.love and happiness should be in a family for it to be function.

3. Two types of family are;

Single parent family- this family includes one parent and his or her child, we can say it's an incomplete family.nuclear family- this family includes the two parents and their children or child, this family is known as the complete family.

4. Two roles and responsibilities of the parents and children in the home are;

both parents must and should protect their child or children from harm.the children must have respect for the family.

Accident in the Home

1. Definition of accident in the home

accidents in the home are common to persons of all ages, therefore home accidents occurs in one's home that may cause an result an injury of a person

2. Two types of accident in the home

fallsminor cuts and wounds

3. The two uses of cereals in cooking

Cereals in cooking are used as thickened agents.

4. complete table

1. minor cuts and wounds

Causes: these are caused by broken glasses, contact with sharp instruments such as knife, pins and needles.Prevention: this can be prevented by keeping the Sharp tools in safe places after used

2. Poisoning

Causes: poisoning can caused by in a result from children taking tablets for sweets, which can lead to death.preventions: you can prevent this by avoiding poisoning from the from the home or you could put it at a safe place that you know the child cannot get it.

Care labels

1. definition of care label

care labels can be defined as a permanent label or we can say a tag, which contains regular instructions that is attached at the back of a cloth.

3. two classification of carbohydrates

Monopoly

What is an example of a series circuit

Answers

Answer:

Explanation

The most famous and common example is Christmas tree lights. You can't tell easily by looking at them whether they are in series or parallel. But you sure know the difference when one of them burns out. When that happens, the whole string goes dead. No matter what you do (other than find out which bulb burned out) will not fix the problem.

Another example is anything that is temperature controlled. For example a furnace is controlled by a thermostat. When the room temperature reaches a certain point, the thermostat is constructed in a certain way so that it forms an open circuit and no current can flow through it. The furnace motor turns off and the furnace stops pumping hot air into a room.

what is the relationship between the energy of a wave and ruts frequency?

Answers

Answer:

Just as wavelength and frequency are related to light, they are also related to energy. The shorter the wavelengths and higher the frequency corresponds with greater energy. So the longer the wavelengths and lower the frequency results in lower energy. The energy equation is E = hν.

Explanation:

What does the survey reveal about your participation in rereational activity​

Answers

Answer:

uugizj8iwuu3ueugeeuieieyeueureir

Activity 1 MATCH IT
Directions: Match Column A to Column B. Write your answer on the space provided before the number.

COLUMN A

__1. Hiking

__2. Orienteering

__3. Zumba

__4. Volleyball
__5.badminton

COLUMN B

A. It is an outdoor navigational recreational activity using specially drawn and detailed maps.

B. Created through on-the –spot aerobics class using the non- traditional music.

C.Going on an extended walk for the purpose of pleasure and exercise.

D. Can be traced from the ingenuity of William J. Morgan in 1895 at Holyoke Massachusetts.

E. Games are held inside the gym to avoid the effect of air in the flight of the shuttle.

Answers

Answer:

1. A hiking

2. C

3. B

4. D

5. E

how moment act when applying a force on the pedal of a bicycle​

Answers

Answer:

Forces that the rider applies to the pedals, saddle and handlebars during speeding, hill climbing and starting are estimated from cine film records using elementary mechanics. The results are compared with force measurements obtained from an instrumented pedal. Pedal forces of up to three times bodyweight were recorded during starting. Handlebar loads were always significantly large.

Other Questions
Select the correct answer.In the following passage from Great Astronomers by Robert Stewall Ball, the author states that he will trace the developments in astronomy from the time of Ptolemy to the nineteenth century. Based on the content and style of the excerpt, what kind of audience did Ball primarily have in mind when he was writing this book?The history of astronomy thus becomes inseparable from the history of the great men to whose labours its development is due. In the ensuing chapters we have endeavoured to sketch the lives and the work of the great philosophers, by whose labours the science of astronomy has been created. We shall commence with Ptolemy, who, after the foundations of the science had been laid by Hipparchus, gave to astronomy the form in which it was taught throughout the Middle Ages. We shall next see the mighty revolution in our conceptions of the universe which are associated with the name of Copernicus. We then pass to those periods illumined by the genius of Galileo and Newton, and afterwards we shall trace the careers of other more recent discoverers, by whose industry and genius the boundaries of human knowledge have been so greatly extended. Our history will be brought down late enough to include some of the illustrious astronomers who laboured in the generation which has just passed away.A. students specializing in the study of astronomyB. people with a casual interest in astronomyC. scientists and mathematicians working with astronomersD. geologists and cartographers Find an equation for the perpendicular bisector of the line segment whose endpoints are (8,-5)(8,5) and (4,3)(4,3). Please help me on this question 1.Which of the following distinguishes the role of a floriculturist?forces bulbs for seasonal salesprovides attractively arranged flowers for the cut-flower tradegrows flowers for gardeners, landscapers, and floristsspecializes in greenhouse production of flowers Consider y=h() described in the table. When comparing h() to the parent function f()=cos(), which statements are true? Select all that apply. Kyle works at a donut factory, where a 10-oz cup of coffee costs 95, a 14-oz cup costs $1.15, and a 20-oz cup costs $1.50. During one busy period, Kyle served 14 cups of coffee, using 204 ounces of coffee, while collecting a total of $16.70. How many cups of each size did Kyle fill?Kyle filled ___ 10-oz cup(s), ___ 14-oz cup(s), and ___ 20-oz cup(s). How many ways can a person toss a coin 16 times so that the number of heads is between 7 and 14 inclusive How many quarters are there in 5 1? ?2 Interest rate (with changing years). Keiko is looking at the following investment choices and wants to know what annual rate of return each choice produces. a.Invest $360.00 and receive $788.17 in 11 years. b.Invest $3 comma 000.00 and receive $11 comma 499.87 in 17 years. c.Invest $31 comma 542.31 and receive $140 comma 000.00 in 22 years. d.Invest $32 comma 895.12 and receive $1 comma 100 comma 000.00 in 40 years. Derive the equation of the parabola with a focus at (0, 1) and a directrix of y = -1.c El volumen de un prisma de base rectangular es 24 m3. Si el largo de la base es 2,5 m y su ancho es 4 m, cul es la altura del prisma? x 8.2 = 10. What is the value of x? Matthew grows wheat on his farm. One of his fields produced 66.8 bushels of wheat this year. If wheat is currently selling for $5.40 per bushel, how much will Matthew earn from this field? One week before a geography teacher begins the next unit in the textbook, her co-teacher conducts an activity where he provides each student with half an index card with part of a word on it. Students have to stand and find the student who has the other half of their card. Then they work with their partner to find the definition for the vocabulary word on their card and draw a picture of what the word represents. The purpose of this lesson is toA. give students a break from the textbook.B. preteach vocabulary and thus improve students' ability to read and understand the next chapter.C. show that all geography-related vocabulary words make great pictures.D. give the co-teacher a chance to conduct a lesson. Which best revises sentence 2 to make it more precise?Read the reflection from Kara's narrative. 1. Ironically, it is from my much younger-and, I used to think, less wise-brother that I learned the value of being honest even when a lie may seem far more tempting at the time.2. I knew that what he did that day must have been extremely difficult for him.3. Yet there he stood, taking responsibility for his actions with not a glimmer of hesitation. 4. It is this determination and resolve to do what is right-even when what is right is not what is easy-that I remembered many years later in college when faced with a similar predicament of my own. OPTIONS TO REVISE SENTENCE 2 A. Watching him bravely tell the truth about what had really happened that day and how he had been the one responsible for the destruction of our neighbor's award-winning flower garden, I realized that he knew he would likely face unpleasant consequences.B. I tried to imagine how difficult it must have been for someone so young to do something so courageous and what must have been going through his mind, but all I could think about was the punishment he would probably receive for doing the right thing.C. Although my brother appeared to be acting bravely, I was certain he was tempted to do the wrong thing that day to avoid some sort of unpleasant punishment, and I thought for a second that he....D. it's not d anyway, this question needs to be re-posted so an intelligent answer-er can reply. someone who did the lessons or took the quiz pls Discuss four actions and behaviour in life that your vision may impact positively to your success in overcoming gender based violence. Which point is located at -8.95? MY FINAL QUESTION 80 POINTS! TAKE your time :) Look at image below Task3Your BlogEvaluate your blog using the data analytics provided in the blog-hosting service. Then, create a report that summarizes your blog activities.Investigate and analyze your blog activities. You will understand how blogs can be effective and what are the challenges involved in creating effective blogs and social media platforms. Use graphics, charts, and other forms of visual data to analyze your blog activities. what is the place value of the 3 in the numeral : 247.3 35/48*100 fraction into percentage.