In another physics experiment, carts run along a frictionless, level track. Cart A is 1 kg and Cart B is 2 kg. Initially cart A is moving to the right at 2.0 m/s and cart B is moving to the left at 7.0 m/s. After they collide, Cart B is moving to the left at 3.5 m/s. What is the magnitude of the velocity of Cart A?

Answers

Answer 1

Answer: [tex]v_{f_A}[/tex] = 5 m/s

Explanation: For collisions, use linear momentum, whose formula is: P = m.v and knowing the law of conservation states that momentum of a closed system is constant in time, i.e. initial momentum equals final momentum:

[tex]p_{f} = p_{i}[/tex]

[tex]m_{A}v_{f_A} + m_{B}v_{f_B} = m_{A}v_{i_A} + m_{B}v_{i_B}[/tex]

Suppose the referential for velocity is positive to the right:

[tex]1.v_{f_A} + 2.(-3.5) = 1.(+2) + 2.(-7)[/tex]

[tex]1.v_{f_A} = 7 + 2 - 14[/tex]

[tex]v_{f_A} = - 5[/tex]

The negative sign, in this case, indicates cart A is going to the left.

The magnitude of velocity of cart A is 5 m/s


Related Questions

how to write a interview in the form of newspaper article pls help me ❓❓❓❓❓❓❓❓❓❓❓

Answers

Answer:

Is

Explanation:

First write the name of the article. Be sure of the name

Write the subject

Write the interview

Write to whom u r asking, like a script.

Hope this helps.....

Which blue line supports the theme “ love can change a person “

Answers

The correct answer is "Jimmy Valentine looked into her eyes, forgot what he was, and became another man"

Explanation:

"A Retrieve Reformation," tells the story of a man known as Jimmy Valentine who is released from Jail. This story has an interesting turn when Jimmy knows Annabel Adams and due to this, decides he will stop being criminal and pursue Annabel's love.

In the excerpt, the sentence that best shows the theme "loves can change a person" is "Jimmy Valentine looked into her eyes, forgot what he was, and became another man" because, in this sentence, it is explained seeing the woman for the first time had a great impact on Jimmy and made him consider who he was "forgot what he was, and became another man" and even change his identity as he focuses on knowing more about Annabel rather than being a criminal.

Select the sentence that uses a gerund phrase as its subject.
a) Christa chose to critique the novel Oliver Twist.
b) The main character of this book does not change much.
c) The student receiving the achievement award should represent his class.
d) Earning money has been a difficult task lately.
e) Choose your words with great care.
f) My job is leading me to rethink my future plans.

Answers

Answer:

I think the answer is D) Earning money has been a difficult task lately.

Both Cowper and Butler manipulate word order. In no less than seventy-five words, explain why Cowper’s diction sometimes makes the text hard to understand, while Butler’s is less difficult.

Answers

First, it is necessary to explain that Diction is the term that refers to the choice of words that the author makes, as well as the choice of linguistic factors used to convey the message, themes and ideas of a written work. The function of the diction is to establish the voice and style of the text, in line with the message that the author wants to convey. Based on this, we can say that Cowper's diction usually makes it difficult to read the text, because Cowper has preferences for words and linguistic factors that promote a more immersive and reflective reading, through less common and more elite words. Butler, on the other hand, has a less difficult diction, since he prefers more direct messages and the use of more common words and of direct, punctual and quick meaning.

We were very tired _____ happy after our flight to Sydney. ( and, but,or)

Answers

Answer:

We were very tired but happy after our flight to Sydney.

Explanation:

BUT is used to decribe to different expressions or things.

(Correct me if I am wrong)

there are only 8 sentences-

Answers

Answer:

1. she underwent heart surgery??

2. you are gone (lol)

3. they designed software.

4. i had prepared for a quiz competition.

5. my elder sister had written a diary.

6. the bag costed $10 dollars.

7. the farmer cultivated the crops.

9. it rained heavily.

im super duper sorry if they're wrong

Answer:

1. She had undergone heart surgery.

Negative: She had not undergone heart surgery.

Interrogative: Had she undergone heart surgery?

2. You had gone.

Negative: You had not gone.

Interrogative: Had you gone?

3. They had designed software.

Negative: They had not designed software.

Interrogative: Had they designed software?

4. I had prepared for a quiz competition.

Negative: I had not prepared for a quiz competition.

Interrogative: Had I prepared for a quiz competition?

5. My elder sister had written a diary.

Negative: My elder sister had not written a diary.

Interrogative: Had my elder sister written a diary?

6. The bag had cost 10 dollars.

Negative: The bag had not cost 10 dollars.

Interrogative: Had the bag cost 10 dollars?

7. The farmer had cultivated crops.

Negative: The farmer had not cultivated crops.

Interrogative: Had the farmer cultivated crops?

8. It had rained heavily.

Negative: It had not rained heavily.

Interrogative: Had it rained heavily?

Hope this helps. :)

What are two aspects of setting? 1.conflict 2.complex characters 3.social conditions 4.author’s theme 5.time

Answers

Answer: Aspects of setting include social conditions and time.

Explanation: The setting of a story also includes the place, (environmental and cultural aspects may be important) Time could mean not only "time of day" but also the season, year, century or era when the events take place.

I hope this helps you!

Answer:

social conditions and time

Explanation:

i got it  right

At the start of the week, Ladasha’s checking account had a balance of $34. She deposited $50 each day for three days. She made a $60 withdrawal on the fourth day. Ladasha also wrote a check for $22.

Answers

Answer: hello ti#ts

Explanation:

Answer:

The equation is 34 plus 50 times 3 -60-22=102

Explanation:

Read this excerpt from "It's My Constitutional Right!" Two men rose and scrambled off the trouble-filled bus. Mrs. Hamilton slowly walked back and took one of their seats. Which line from the police report describes the same event? "She struggled off the bus and all the way to the police car." "These colored were sitting forward, left side, of the rear entrance." "An unidentified colored female . . . moved to the rear when we asked her to." "After we got her in the police car she kicked and scratched."

Answers

The line that describes the same event as the excerpt is "An unidentified colored female . . . moved to the rear when we asked her to."

What is the excerpt about?

This excerpt is set in a bus and it describes a black woman moving to the back of the bus and taking a seat "Mrs. Hamilton slowly walked back and took one of their seats."

What police report line describes the same event?

The only line that describes the same event is "An unidentified colored female . . . moved to the rear..." because, in this line, it is described the movement of the woman one more time.

Learn more about police report in: https://brainly.com/question/5008363

Answer:

the answer is c

and unidentified colored female.

I am writing to apply for a customer service representative position that was advertised on your company's website. What makes the style of this sentence effective ? A- the sentence used a large vocabulary B- the sentence shows eagerness C- the sentence uses a formal style D- the sentence is especially personable

Answers

Answer:

C- the sentence uses a formal style

Explanation:

What makes the style of the sentence "l am writing to apply for a customer service representative position which was advertised on your company's website" effective is the uses of a formal style and an appropriate language, register and conventions for a formal letter of application. Furthermore, the candidate stated his or her reason of writing , the position interested in and where the applicant came across the advertisement

A formal style of writing is mainly use by a company to another, or between such organizations and their clients or customers, or external parties. The overall style to be use depends on the relationship between the parties involved. A formal style writing produces a lasting written record, and it's usually taken more seriously by the receiver of such writing than other forms of communication

Choose whether or not there should be a comma between the bolded adjectives. He left his expensive new book in the hallway!

Answers

Answer:

no comma

Explanation:

Which sentence quotes and cites a source correctly?
O A. Herb Rawson states, "Democracy depends on an educated public." (54)
O B. "Democracy depends on an educated public," Herb Rawson states
(Rawson 54).
C. "Democracy depends on an educated public (Rawson 54).
D. According to Herb Rawson, "Democracy depends on an educated public"
(54).

Answers

B and C

Both of them correctly state the author and paragraph number the sentence can be found on.

Select all the correct answers. What are two purposes of subheadings?

Answers

Answer:

Organization and more in depth

Explanation:

At the start of the week, Ladasha’s checking account had a balance of $34. She deposited $50 each day for three days. She made a $60 withdrawal on the fourth day. Ladasha also wrote a check for $22.

Answers

Complete question :

At the start of the week, Ladasha’s checking account had a balance of $34. She deposited $50 each day for three days. She made a $60 withdrawal on the fourth day. Ladasha also wrote a check for $22. Explain how you can write an expression to show the account balance at the end of the week.

Answer:

$34 + (3 * $50) - $60 - $22

Explanation:

Given the following :

Account balance = $34

Deposit made = $50 (for 3 days)

Withdrawal made = $60 ( on the 4th day)

Check written = $22

Account balance : $34

Add: Deposit : $50 * 3 [for three days]

Subtract : Withdrawal : $60

Subtract : Check : $22

Therefore,

$34 + (3 * $50) - $60 - $22

Answer:

Explanation:

The account started at $34. Three $50 credits were added. Indicate the withdrawal by subtracting $60 or adding –$60. The check is also represented by subtracting $22 or by taking the additive inverse and adding –$22.

this was the sample response on edge

nowing exchange between Romeo and Juliet from act I of Romeo and Julier. What does the excerpt reveal about the love between the
two young people?
ROMEO: (to JULIET) If profane with my urworthiest hand
This holy shrine, the gentle fine is this:
My lips, two blushing pilgrims, ready stand
To smooth that rough touch with a tender kiss.
JULIET: Good pilgrim, you do wrong your hand too much,
Which mannerly devotion shows in this
For saints have hands that pilgrims hands do touch,
And palm to palm is holy palmers' kiss.
ROMEO: Have not saints lips, and holy palmers too?
JULIET: Ay, pilgrim, lips that they must use in prayer.
OA
В.
Their love is based on both physical and emotional attraction
Their love is shallow and based on defying their families.
Their love is driven by their intellectual needs.
Their love is instant and illogical
С
D

Answers

Answer:

Their love is based on both physical and emotional attraction.

Explanation:

Romeo and Juliet is the play written by William Shakespeare. The play belongs to romantic tragedy genre. The play is about two young lovers Romeo and Juliet.

From the given excerpt reveals that Romeo and Juliet were in love due to physical and emotional attraction. The lines from the excerpt reveals that they both want to touch, feel, and kiss each other. This is the first time that they have talked to each other in the play and are attracted to each other.

Thus the correct answer would be that there love is based on physical and emotional attraction.

Identify the complete adverb clause. What does the adverb clause answer?

Let's write our compositions now so that we can go to the basketball game.

A. Let's write our compositions
B.Let's write our compositions now
C. write our compositions now
D. write our compositions now so that we can go
E. so that we can go
F. so that we can go to the basketball game
G. go to the basketball game
H. to the basketball game

Answers

Answer: The adverb clause in this sentence is "so that we can go to the basketball game". It explains the main verb "write" more thoroughly, and gives us an explanation "why" they have to do finish their composition.

Explanation: Adverbial clauses of purpose introduced by "SO THAT" are always followed by a modal expression such as CAN, WILL, COULD, etc.

Answer:

The answer is F. so that we can get to the basketball game.

PLEASE HELP Which does rebellion mean? fighting against the current ruler reciting or singing heroic poetry killing an animal as an offering to a god fighting with the current ruler

Answers

Answer:

fighting against the current ruler

Explanation:

Rebellion is an act of armed resistance to an established government or leader.

HOPE IT HELPS :)

PLEASE MARK IT THE BRAINLIEST!

please help. another word pronouced the same way as ring

Answers

Answer:

Wring

Explanation:

To twist, squeeze, or compress, especially so as to extract liquid. Often used with out

Hope this is correct and helpful

HAVE A GOOD DAY!

Answer:

Sing

Hope this helps...

Have a nice day!!!!

write an article on earthquake killed 500 please hurry i need to write it but don't have too many ideas

Answers

Answer:

i can give u ideas

Explanation:

so first u need to start it off with a good headline whatever pops out and makes someone want to read that article

then do introductions and use facts amd relevant up to date information to support what u are saying

also include ur point of view and other peoples opinion on this matter also what other countries have done to help the place that was affected

hope this help pls can u heart and like and give my answer brainliest pls i beg u thx !! : )

state the situations where the falling tune is used.give examples ​

Answers

the falling tone is commonly found in statements,commands,wh-questions(information questions), confirmatory question tags and exclamations

statements- Nice to meet ↓ you

commands- write your name ↓ here

wh-questions- where do you ↓ work

question tags- she's such a nuisance, isn't ↓ she?

exclamations- how nice of ↓ you!

Which in-text citation is formatted correctly in MLA style? (Homer 218)

Answers

Answer: the ansewer is," we were left to groan and wait for the morning."

Explanation:

How do the animals feel when the egg hatches into a turtle?

Answers

Idk I guess they feel happy

Select the correct answer. Which sentence is in passive voice? A. The sun beat down on the thirsty travelers. B. Carla went to the supermarket to get some supplies. C. Jason baked a cake for his brother. D. These cookies will be eaten by my neighbor’s kids.

Answers

Answer:

D. These cookies will be eaten by my neighbor’s kids.

Explanation:

D) These cookies will be eaten by my neighbor’s kids....

SOMEOME PLEASE HELP ME!!
F. Complete with the Present Perfect Simple or the
Present Perfect Continuous of the verbs in brackets.
1. A: I ...... (look) for a fashionable pair of boots since
last month but so far I ...... (not find) anything
B: Why don't you check out the new department store?
I think I ...... (see) some nice boots there.
2. A: So, ........ Tina ........ (save) up enough
money to buy the bike she wants?
B: Yes, she ....... (work) part-time for three months
now and she ....... (manage) to put 300 euros
aside.​

Answers

Answer:

1. a: have been looking; have not found

b: have seen

2. a: has Tina been saving

b: has been working; has managed

How did Crow get water?
o
She tipped a pitcher and water rolled out.
She climbed into a pitcher that had water in it.
She dropped stones into a pitcher to raise the water level.
She filled a pitcher with water from a well.
Plszzzz help

Answers

Assuming this is the classic Aesop fable “The Crow and the Pitcher,” the correct answer is that the crow dropped stones into the pitcher and raised the water level.
She dropped the stones to raise the water level.

What are some of the advantages and disadvantages of using a mainstream news source to learn more about this event?

Answers

Answer:

Advantages

Gain an insight into events that are occuring around you

Disadvantages

Contestability and accuracy vs perspectives

Hope this helps :)

Which of the following defines cause?

writing that explains


an event, an action, or a situation that produces a result

the result produced from an event


expository writing that describes the relationship between an event or circumstance and its causes

I'm so confused!!! HELP!!!)

Answers

Answer:

an event, an action, or a situation that produces a result

Explanation:

Because of the wording, I understand why this is tricky. However, the word "result" in the answer refers to the "effect" that we are often used to hearing in cause and effect.

Answer:writing that explains  an event, an action, or a situation that produces a result .

Explanation: I feel like the first one describes cause because the second one is too vague , and  for the  third one , you can define a word using that same word in the definition

A famous person recently spent a day at your school. Write an email to a friend, describing what happened IT'S URGENT

Answers

Answer:

hey (example name) emily,

I miss you so much, we've been so busy lately and havent been able to see eachother, i hope this changes soon. anyway, I wanted to tell you about what happened in school the other day, an alum came to visit my acting class, but it wasn't some struggling, one role, small part, starving actoress; it was THE (example actor) Emma Watson! As in Harry potter. she had people traveling with her as she knew people might surround her, and they did. She talked about her experience as a child actress and how the world of acting is no joke. We performed for her and she gave us notes on our scenes. when I was performing she told me I was incredible, although she did have some suggestions on how I could improve, she is EMMA WATSON, and as she was making her suggestions she went on the stage and told me how to stand. She also said that I was tense and should losen up, she grabbed my hands and told me there is nothing to fear. long story short I am NEVER washing these hands again!

talk soon?

name

Explanation:

HOW Sheryl Crow lives changed

Answers

Answer:

coz of positive attitude

What type of sentence is this? Because he wants to make the track team, Travis runs three miles after school every day, and his father times him. (4 points)

Answers

Answer:

"Because he wants to make the track team, Travis runs three miles after school every day, and his father times hime." It is as compound complex sentence.

Explanation:

A compound complex sentence is made of a compound sentence and a complex sentence. The first one is made of a conjunction that unites two sentences. When it comes to a complex one, this has a dependent sentence and a simple one. So regarding a compound complex sentence, it has one or more simple sentences with a conjunction and it means that some of those sentences is complex, meaning it is dependent o subordinate.

In this example, we can see that "Travis runs three miles after school every day, and his father times him" has two simple sentences joined by a conjunction is a dependent clause from the first one "Because he wants to maje the track team".

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