6. The race car in the previous problem slows from
36 m/s to 15 m/s over 3.0 s. What is its average
acceleration?

Answers

Answer 1

Answer:

a_AV - 15 m/s – 36 m/s =-70 m/s2. At. 3.0 s.

Explanation:

Answer 2

The average acceleration of the car as it slows down is  -5 m/s².

Given is a race car that slows down from 36 m/s to 15 m/s in 3 seconds.

initial velocity [u] = 36 m/s

final velocity [v] = 15 m/s

time taken [Δt] = 3 s

We can calculate the acceleration as follows -

a = Δv/Δt

a = (v - u) / Δt

a = (15 - 30)/3

a = -15/3

a = -5 m/s²

Therefore, the average acceleration of the car as it slows down is

-5 m/s².

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Related Questions

IDK MORE POINTS BUT SAY SOMTHING FUNNY

Answers

Not the place for this but yesterday I ate a clock, it was very time consuming.

What is brown and sticky

A STICK GET YOUR MIND OUT OF THE GUTTER

can energy change in physical change

Answers

“Physical changes involve small changes in energy and are easily reversible. A chemical change may involve a decomposition or synthesis reaction. During chemical change, the mass and number of atoms is conserved, but the number of molecules is not always the same. Chemical reactions involve larger changes in energy.” (open stacks) hope this helps!

4.) A boat heading north crosses a wide river at a velocity of 2.778 m/s. The river current pushes the boat east at a constant velocity of 1.389 m/s. Find the resultant velocity. a.) 3.11 m/s b.) 9.65 m/s c.) 0.78 m/s d.) 6.38 m/s​

Answers

Answer:

Resultant velocity = 3.11 m/s.

Explanation:

It is given that,

The velocity of a boat is 2.778 m/s due North

The velocuity of river is 1.389 m/s due east.

We need to find the resultant velocity. The angle between these two velocities is 90 degrees. The resultant is given by :

[tex]v=\sqrt{v_b^2+v_r^2} \\\\v=\sqrt{2.778 ^2+1.389 ^2} \\\\v=3.11\ m/s[/tex]

So, the correct option is (a).

awnser thiss i need awnsers​

Answers

Answer:

B

Explanation:

Density = mass / volume

Less dense objects float to the surface so if the liquid becomes 1000 kg/m3 then it is the densest thing in the mixture, except for Q which has a density = to that of the water so it will stay in place around the middle, since the other two are more dense they will go to the bottom of the container.

The answer to this question is b

A runner starts at rest and accelerates until reaching a speed of 9.0 m/s. A graph of her velocity over time is shown below
Velocity
m
15+
12+
9
6
3+
Time (s)
1
3
6
9
12 15 18
What is her average acceleration from 0 to 9.0 seconds?

Answers

Answer:

0.67 m/s^2

Explanation:

khan academy

Plz I need help on my last question

Answers

Answer:

Dispalcement(s)=v*t

=8.1*6

=48.6m

HELP RN PLEASSEEE!!! HELP!!

Choose all the answers that apply.

According to Newton's second law of motion:

1.objects at rest will remain at rest unless acted upon by an outside force

2.mass has an inverse relationship with acceleration

3.the greater the magnitude of force, the faster the acceleration

4.acceleration is caused by unbalanced forces

5.every action has an equal and opposite reaction

Answers

2ND LAW OF MOTION

2. mass has an inverse relationship with acceleration.

3. the greater the magnitude of force, the faster the acceleration.

Challenge: Write a Poem

Answers

Answer:

okkk soo...

Friendship is one of life's greatest treasures. Friends that are loyal are always there to make you laugh when you are down, they are not afraid to help you avoid mistakes and they look out for your best interest. This kind of friend can be hard to find, but they offer a friendship that will last a lifetime. Other friends may not be quite as loving. The pain caused by a friendship marred by betrayal is not easy to overcome. In fact, many poems find their inspiration from the joy brought about by a loving friendship or the pain caused by a failed friendship.

Explanation:

Roses aren’t always red and violets aren’t exactly blue, the society we live in never seems to speak the truth. Smiles aren’t always happy and frowns aren’t always upset, people judge too quickly and our feelings are what they forget

what should you do if the exercise schedule you make for yourself is not working out well by midweek

Answers

Answer:

I will find a solution.

Explanation:

i will figure out the problem,then solve it

DO NOTWORKOUT WHAT AM I SUPPOSE TO SAYY

lily took 57 seconds to walk from schoolroom to library. if the distance between the classroom and library was 38m, at what average speed did lily walk in m/min?

Answers

Answer:

7mph

Explanation:

A Parachutist with a camera, with descending at a speed of 12.5m/s, releases, the camera at an altitude of 64.3m. What is the magnitude of the velocity of the camera just before it hits the ground ? The acceleration of gravity is 9.8 m/s and air friction is negligible. How long does it take the camera to reach the ground

Answers

Given :

Initial velocity, u = 12.5 m/s.

Height of camera, h = 64.3 m.

Acceleration due to gravity, g = 9.8 m/s².

To Find :

How long does it take the camera to reach the ground.

Solution :

By equation of motion :

[tex]h = ut+\dfrac{gt^2}{2}[/tex]

Putting all given values, we get :

[tex]12.5t+\dfrac{9.8t^2}{2}=64.3\\\\4.9t^2+12.5t=64.3[/tex]

t = 2.56  and t = −5.116.

Since, time cannot be negative.

t = 2.56 s.

Therefore, time taken is 2.56 s.

Hence, this is the required solution.

A rotating pulley completes 12 rev in 4 secs determine the average angular velocity in rev /s, rpm and in rad/s​

Answers

12 rev per 4 seconds
3 rev per second
180 rev per minute
18.8 rad per second

Answer: The average angular velocity  for a rotating pulley is 3 rev/s, 180 rpm, 6π rad/s.

The pulley turns rotating when the rope tugged and completes 12 rev in 4 seconds.

How to determine the average angular velocity?

 If we consider a pulley rotating in a same axis, every point in the pulley has the same angular velocity.

Formula for angular velocity:

                    ω = Δθ / Δt

The average angular velocity can be defined as the ratio of the angular displacement to the time.

                                θ = 12 rev, t = 4s

             1 revolution = 2π rad

It can be solved as:

      Revolutions / second: 

      rev / s = 12 / 4      

                  =  3

      Revolutions per minute:

        rpm   =  ( 12/4) × 60

                  =   180

      Radian / second :

        rad/s  =   (12×2π / 4 )

                   =  

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what does the galaxy made of ?​

Answers

Galaxies are sprawling systems of dust, gas, dark matter, and anywhere from a million to a trillion stars that are held together by gravity. Nearly all large galaxies are thought to also contain supermassive black holes at their centers.

A car starts from rest and accelerates uniformly over a time of 7.31 seconds for a distance of 160 m. Determine the acceleration of the car.

Answers

Answer:

Since it is given that car starts from rest so initial velocity  

u

=

0 m/s

. The position of car is given, so  

S

=

215 m

.

Explanation:

6346345

Answer:

215 m

Explanation:

A scientist who conducted an experiment obtained an unexpected result. What will she most likely do with the unexpected result? leave it out of her analysis and final report stop the experiment and begin again change the procedures and try again develop a new question to be investigated

Answers

Answer: stop the experinment and begin again sometimes the result of the experiment may give you unexpected results due to the fact that you may have missed a certain step or you didn't follow the procedure accurately to the dot, hence it's important to redo the experiment and see if every step was followed accurately before you can discard the results or change the procedure.

Explanation:

Answer:

d

Explanation:

Branden ran at 6 m/s for a time of 300s. How much distance did he cover during his run?

Answers

Answer:

The covered distance was 1800 [m]

Explanation:

In order to solve this problem we must use the following formula of kinematics. It is important to make it clear that Branden's speed never changes during that time, or therefore the speed is constant.

[tex]x = x_{o}+v*t\\[/tex]

where:

x = distance [m]

Xo = initial position = 0

v = velocity = 6 [m/s]

t = 300 [s]

Now replacing we have:

x = 0 + (6*300)

x = 1800 [m]

4. Hijackers are taking over a plane, They tell the pilot to get to Spain as fast as possible. The plane goes from 900
km/hr (beginning speed) to 1140 km/hr (final speed) in just 6 seconds. What is the acceleration of the plane?

Answers

The acceleration is about 1457, because of the wind turbines and the way it’s going

To get employees to work longer hours, employers often offer __________ in the form of extra pay.
A.
costs
B.
benefits
C.
incentives
D.
consequences

Answers

C- Incentives it’s like a reward ~!

Answer:

C

Explanation:

I took the test

A wagon with a mass of 35 kg is pulled so that it accelerates from 0 m/s to 30 m/s in 15
seconds.
Remember to show all work!
a. What is the acceleration of the wagon?


b. What is the force required to get this acceleration?


Plz help me

Answers

Explanation:

a = v-u/t

a is the acceleration of the body

v is the final velocity

u is the initial velocity

t is the time

Given

v = 30m/s

u = 0m/s

t = 15secs

Substitute

a = 30-0/15

a = 30/15

a = 2m/s²

Hence the acceleration of the wagon is 2m/s²

b) Force = mass * acceleration

Given

Mas of the wagon = 35kg

acceleration a = 2m/s²

F = 35*2

F = 70N

Hence the force required to get this acceleration is 70N

what is the speed of sound in temperature of 56 degrees C?

Answers

Answer:

316 meters/second.......

Answer:

316 meters/second

Which of the following would be best for absorbing light?

a A mirror

b A black shirt

c glass

d concrete

Answers

B.) a black shirt


Explanation:
A black object absorbs all the light; it doesn’t reflect any color

When you sit in a chair, your body exerts a downward force on the chair. What
is the reaction force?
A. The floor pushes up on the chair.
B. The chair pushes down on the floor.
C. Earth's gravity pulls up on the chain
D. The chair pushes up on your body.

Answers

Answer:

ITS D !!!

Explanation:

IN ME WE TRUST

When you sit on the chair, your body will exert a downward force and in reaction, the chair pushes up on your body. Hence, option D is correct.

What is a Reaction Force?

A building experiences a reaction force when it rests against another object. Calculating the reaction forces at the supports as a result of the forces operating on the beam is a necessary step in the analysis of a beam structure. The reaction forces can be calculated using a free body diagram of the entire beam.

Corrosion can be caused by reaction forces. For instance, due to the system's increased stiffness, reaction forces increase when bearing clearances are reduced from 350 mm to 150 mm.

According to the question, when the body will exert a downward force that is mg due to gravity, the chair will make a normal reaction force which will be equal to the force applied by the body on the chair.

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12. Describe Binding energy and how it plays a role in nuclear fusion up to 56Fe (the synthesis of iron
nuclei). Include a description of the relationship between the strong nuclear force, the
electromagnetic force, and the number of nucleons involved in the fusion in your answer.
Help me on thiss one once again ughh ! asap ! hurry

Answers

The binding energy per nucleon increases in value from Hydrogen up to Iron (Fe 56). This causes lighter nuclei to fuse together to make more stable heavier nuclei.

The strong nuclear force is responsible for causing the fusion of the nuclei and it is much much stronger than the electromagnetic force that would otherwise keep the positive protons apart.

binary ionic compounds are called salts. true or false

Answers

Answer:

True

Explanation:

APEX APPROVED

Answer: TRUE

Explanation:APΣX

Please help ASAP WILL GIVE BRAINLIEST

why is it important to use the correct number of significant digits when reporting the results of an experiment
A. So other scientist can see how spread out your data are
B. So other scientists can see how many separate trials you preformed
C. So other scientists can compare their experimental results with yours
D. So other scientistcan see how precise your measurements were

Answers

Answer:

D

Explanation: It makes the most sense. Plz mark brainliest

Answer:

D

Explanation:

So other scientist can see how precise your measurements are

Moral Dilemma A man is sitting at home worrying about the fact that his daughter needs a major surgery in order to continue living, but he does not have the money to pay for it. He has asked family and friends to help with the cost of the surgery, but he was only able to raise about a quarter of what the surgery costs. He then remembers that he has power of attorney (i.E., control over someone else's finances/legal issues) for his out-of-touch-with-reality, but healthy, 85-year-old father. The man could, without anyone knowing, use his father's money to pay for the surgery. However, this would leave his father with only one year of living expenses. The man decides to take his father's money for his daughter's surgery. Should the man have done that? Why?

Answers

Answer:

Mostly with aid of Kohlberg 's moral growth theory, I clarify this answer, which would also be separated into three stages under which this particular problem is illustrated below.

Explanation:

Pre conventional Stage:

The daughter's father would think about either the penalty during that point if he commits any wrongdoing or breaches laws to save her daughter. But another way to make that happen for surgery is that a person cares about either the legislation and rules as well as the significance of respecting them throughout the pre-conventional process. He will also attempt to establish its insight into solving these problems.

Conventional Stage:

As per the traditional process of the spiritual psychosocial development of Kohlberg, her father would think of civilization because there are conventions that unless he borrows money of his dad again for the procedure of their daughter, culture would label him greedy or prejudice against him to pay the profits of his father despite his consideration.

Post conventional Stage:

As per this argument, he might determine for her child as well as father in his philosophy including perspectives, which means that his father is not in the situation of requesting credit, but because he's in a position to give a recommendation, therefore he certainly gives authorization rescue her grandchildren even though she is small and has several activities to do in hers life. And subsequently, with emerging profits, he will take care of his father as well as daughter, and nowadays focus says their daughter wants treatment to recover.

Which model of the atom has electrons traveling in specific paths around the nucleus? Bohr's model Rutherford's model Thomson's model Dalton's model

Answers

Answer:

A, Bohr's model

Explanation:

Took the quiz, hope it's right for you.

(The other three did have something to do with it they just didn't create that specific model)

The model of the atom that has electrons traveling in specific paths around the nucleus is Rutherford's model.

Therefore, the correct answer is option B

J. J Thomson proposed that the atom is a sphere of positively charged matter in which negatively charged electron are embedded.

In Rutherford's model of atomic structure, the electrons moves in orbits by electrostatic attraction to the positively charged nucleus.

According to Dalton's atomic theory, atom were indestructible and indivisible  solid particle.

Bohr's model made assumption that electron can only exist in circular orbits of definite quantum energy.  

According to the question, the model of the atom that has electrons traveling in specific paths around the nucleus is Rutherford's model.

Therefore, the correct answer is option B

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Which is a factor that keeps Earth in orbit around the sun

Answers

Answer:

Gravity

Explanation:

Newton contributions

Gravity Is the main factor to keep them together

List two objects here on Earth that are sources of radiant energy. How can you tell they emit radiant energy?

Answers


They glow and feel hot

Which one of the following is not a fundamental physical quantity??! A. Temperature b. Current c. Area d. Mass​

Answers

Answer:

Out of this, Area is not a fundamental physical quantity.

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