PLEASE help me with these Momentum and Physics problems?

Galaxy_Dazzle asked:


Please I would really appreciate it if you could help me with these physics problems. Yes I know these problems are kind of long, very sorry about that..
If you could help me with these problems I would love you like forever because I really would like to understand them better, and if you can help me with these then I would consider you an ultimate lifesaver and cherish you because you are so kind to help me. If you could help me with these today, that would be so wonderful because I really need these to review for this test I’m having tomorrow…. Thanks in advance for your help.

1.) The acceleration due to gravity on the surface of planet X is 19.6 meters per second squared. If an object on the surface of this planet weighs 980.0 newtons, the mass of the object is
a. 50.0 kg b. 100. kg c. 490. kg d. 908 N

2.) Two weightlifters raise identical 50.-kilogram masses above their heads. Weight lifter A lifts the mass 1.5 meters, while Weight lifter B lifts the mass 2.0 meters. What conclusion can be drawn about the work done by the weightlifters?
a. Weight lifter B does more work
b. Weight lifter B is taller
c. Weight lifter A does more work
d. Both weight lifter A and B do the same amount of work because they are lifting the same mass

3.) The magnitude of the momentum of an object is 64.0 kilogram-meter per second. If the velocity of the object is doubled, the magnitude of the momentum of the object will be
a. 32.0 kg-m/sb. 64.0 kg-ms/sc. 238 km-ms/sd. 256 kg-m/s

4.) A circus worker uses a pulley with a 10-m rope to lift a 900-N tiger to a 5-m platform. His effort force is 450 N. What is the mechanical advantage of the pulley?
a. 1/2b. 1c. 2d. 4

5.) A 600-newton man climbing a rope a distance of 2 meters in 1 second develops power at the rate of
a. 12 Wb. 600 W c. 300 W d. 1200 W

6.) A ball is thrown at an angle to the horizontal. What happens to the ball’s vertical acceleration during the tim the ball is in the air?
a. It decreases, then increasesb. It decreases, then remains the samec. It increases, then decreasesd. It remains the same

7.) A 3.0-kilogram steel block is at rest on a frictionless horizontal surface. A 1.0 kilogram lump of clay is propelled horizontally at 6.0 meters per second toward the block. Upon collion, the clay and steel block stick together and move to the right with a speed of
a. 1.5 m/sb. 2.0 m/sc. 3.0 m/sd. 6.0 m/s

8.) Air bags help to minimize injuries by providing a large area for the force of impact to be exerted. In terms of the impulse-momentum theory, what is another advantage of an air bag?
a. decreases the momentum of the passengerb. increases the amount of time the force is appliedc. decreases the time of impact applied by the air bag
or d. increases the implusive force applied to the passenger
9.) A force of 1000 N is exerted on a golf ball for 0.005 s. The change in momentum of the golf ball is
a. 5 kg m/sb. 50 kg m/sc. 5000 kg m/sd. 200,000 kg m/s

10.) Which of the following is the minimum amount of work done by the hydraulic lift to raise a 1700 kg automobile 2.0 m vertically?
a. 850 Jb. 3400 Jc. 8300 Jd. 33000 J

11.) A ball is thrown horizontally from the top of the building with an initial velocity of 15 meters per second. At the same instant, a second ball is dropped from the top of the building. The two balls have the same
a. path as they fallb. final velocity as they reach the groundc. initial horizontal velocityd. initial vertical velocity

12.) Which of the following is most useful in determining the kinetic energy of a 75 g battery-powered car traveling a distance of 25 m?
a. force probeb. voltmeterc. meterstickd. stopwatch

13.) Which of the following lists all the tools needed to determine the amount of work done in stretching a rubber band?
a. spring scale and rulerb. platform balance and probec. metal wire and meter stickd. hanging mass and thermometer

14.) A person moves a large box across a level floor by applying a horizontal force of 300 N. If the person pushes the box a distance of 6 meters in 10 seconds, how much work does the person do on the box?
a. 180 joulesb. 200 joulesc. 1800 joulesd. 18000 joules

15.) A 10-kilogram ball is fired with a velocity of 500 meters per second from a 1,000 kilogram cannon. What is the recoil velocity of the cannon?
a. 5 m/secb. 2 m/secc. 10 m/secd. 500 m/sec

16.) A 120 kg lineman moving right at 2 m/s tackles an 80 kg football fullback moving left at 8 m/s. After the collision, both players move left at 2 m/s. What is the momentum of the players after teh collision?
a. momentum of lineman= 240 kg m/s and momentum of fullback =160 kg m/s
b. momentum of lineman=240 kg m/s and momentum of fullback= 640 kg m/s
c. momentum of lineman= 720 kg m/s and momentum of fullback= 320 kg m/s
d. momentum of lineman= 400 kg/m/s and momentum of fullback= 400 kg m/s

17.) A baseball player throws a ball horizontally. Which statement best describes the ball’s motion after it is thrown? (neglect the effect of friction)
a. It’s vertical speed remains the same, and its horizontal speed increases
b. It’s vertical speed remains the same, and its horizontal speed remains the same
c. It’s vertical speed increases, and its horizontal speed increases
d. It’s vertical speed increases, and its horizontal speed remains the same

18.) An object falls freely near the Earth’s surface. Which best represents the relationship between the object’s kinetic energy and its time of fall?
a. Kinetic energy increases at a constant rate
b. Kinetic energy decreases at a constant rate.
c. Kinetic energy decreases by time squared
d. Kinetic energy increases by time squared

Stupid people?

bilbo b asked:


LICENSE TO STEAL

Two Kentucky men tried to pull the front off a cash machine by running a chain from the machine to the bumper of their pickup truck. Instead of pulling the front panel off the machine, though, they pulled the bumper off the truck. They panicked and fled, leaving the chain still attached to the machine, their bumper still attached to the chain, and their license plate still attached to the bumper.

IN THE BAG

A tourist, supposedly on a golf holiday, stood in line at the customs counter. While making idle chatter, the customs official thought it odd that the golfer didn’t know what a handicap was. The officer then asked the tourist to demonstrate his swing. He did - backwards. A substantial amount of narcotics was found in the golf bag.

MADE FOR TV

Guns For Hire, an Arizona company specializing in staged gunfights for Western movies, got a call from a 47-year-old woman who wanted to have her husband shot. She was sentenced to four years in jail.

DO YOU ACCEPT CREDIT CARDS?

A Texan convicted of robbery worked out a deal to pay $9600 in damages rather than serve a two-year prison sentence. For payment, he provided the court a forged check. He got his prison term back, plus eight more years

He was a Loving Husband will he be missed?

oldman asked:


My name is Philip… Let me explain how I handle the situation with my wife, Julie.

When I took early retirement last year, it became necessary for Julie to get a full-time job for the extra income. Shortly after she started working I noticed she was beginning to show her age.

I usually get back from the Golf Course just before she gets home from work. Although she knows I’m hungry, she always has to rest for half an hour or so before she starts dinner. I don’t yell at her. Instead, I tell her to wake me when the dinner is on the table.

She used to do the dishes as soon as we’d finished eating. Now, they sit on the table for several hours. I do what I can by diplomatically reminding her that, They won’t clean themselves. I know she appreciates this, as it does motivate her to get them done before she goes to bed.

Now that she has gotten older, she seems to get tired so much more quickly. Our washer and dryer are in the basement. Sometimes she says she just can’t make another trip down those steps. I don’t make a big issue of this, unless I need something ironed to wear to the Monday lodge meeting, or to Wednesday’s or Saturday’s poker club, or to Tuesday’s or Thursday’s bowling.

Also, if I’ve had a day on the course and it was wet and muddy, my clubs are a mess, so I let her clean them. My golf bag is heavy so I lift it out of the trunk for her. Women are delicate and can’t lift heavy stuff as good as men.

Another symptom of aging is complaining. For example, she will say it’s difficult to find time to pay the monthly bills during her lunch hour. But boys, we take ‘em for better or worse, so I just smile and offer encouragement. I tell her to stretch it out over 2 or even 3 days! That way she won’t have to rush so much.

She even complains of having to carry heavy groceries from the supermarket. I have told her, if the shopping’s heavy, make 2 trips.

I also remind her that missing lunch now and then wouldn’t hurt her (if you know what I mean). I like to think tact is one of my strong points.

When doing simple jobs, she seems to think she needs more rest periods. She had to take a break when she was only half finished mowing the lawn. I try not to make a scene. I’m a fair man. I tell her to fix herself a cold glass of freshly squeezed lemonade, and one for me too.

I know that I probably look like a saint in the way I support Julie. I’m not saying that showing this much consideration is easy. Many men will find it difficult. Some will find it impossible.

Guys, if you just use a little more tact and less criticism of your aging wife because of this article, I will consider that writing this was well worth while.

Signed, Philip.

UPDATE:

Philip died suddenly last Thursday. He was found with a extra long 50 inch Big Bertha Driver rammed up his posterior, with only 2 inches of the grip showing. His wife Julie was arrested, but an all-woman Grand Jury accepted her defence that he accidentally sat on it, and died.

fastest way to lose weight?

Kay asked:


I play golf constantly, carrying a bag, walking miles, i excersize every night with a small workout routine, i have a 6pack…. i look good, but 118 lbs would make me feel better….i weight 122lbs…. im 5′6
I definitely am not in lack for excersize.

Combinations Probability?

(: Muffin Man :) asked:


1. A bag contains 12 white golf balls and 8 orange golf balls.

a) Write a combination expression for teh number of ways that four white balls can be chosen from the bag.

b) Write a combination expression for the number of ways that four balls of any colour can be chosen from the bag.

c) Use your answers above to find the probability of choosing four white golf balls.

Sometimes friends, neighbours and wife altogether can save some money?

Taknev asked:


Two old friends were just about to tee off at the first hole of their local golf course when a chap carrying a golf bag called out to them, Do you mind if I join you? My partner didn’t turn up.

Sure, they said, You’re welcome. So they started playing and enjoyed the game and the company of the newcomer. Part way around the course, one of the friends asked the newcomer, What do you do for a living?

I’m a hit man, was the reply.

You’re joking! was the response.

No, I’m not, he said, reaching into his golf bag, and pulling out a beautiful Martini sniper’s rifle with a large telescopic sight. Here are my tools.

That’s a beautiful telescopic sight, said the other friend, Can I take a look? I think I might be able to see my house from here. So he picked up the rifle and looked through the sight in the direction of his house.
Yeah, I can see my house all right. This sight is fantastic. I can see right in the window. Wow, I can see my wife in the bedroom. Ha Ha, I can see she’s naked! What’s that? Wait a minute, that’s my neighbor in there with her. He’s naked as well! The bitch! He turned to the hit man, How much do you charge for a hit?

I do a flat rate, for you, one thousand dollars every time I pull the trigger.

Can you do two for me now?

Sure, what do you want?

First, shoot my wife, she’s always been mouthy, so shoot her in the mouth. Then the neighbor, he’s a mate of mine, a bit of a lad, so just shoot his dick off to teach him a lesson.

The hit man took the rifle and took aim, standing perfectly still for a few minutes. Are you going to do it or not? said the friend impatiently. Just wait a moment, be patient, said the hit man calmly, I think I can save you a thousand dollars here…..

how funny is this?

Robort King asked:


Two friends were playing golf when one pulled out a cigar.

He didn’t have a lighter, so he asked his friend if he had one. I sure do, he replied while he reached into his golf bag and pulled out a 12 inch Bic lighter.

Wow! said his friend, Where did you get that monster lighter?

I got it from my genie.

You have a genie?

Yes, right here in my golf bag.

Could I see him?

He opens his golf bag and out pops a genie.

The friend asks the genie, Since, I’m a good friend of your master, will you grant me one wish?

Yes I will the genie replies.

The friend asks the genie for a million bucks.

The genie hops back into the golf bag and leaves him standing there, waiting for his million bucks.

Suddenly, the sky begins to darken and the sound of a million ducks flying overhead is heard.

The friend tells his golfing partner, I asked for a million bucks, not a million ducks!

He answers,I forgot to tell you that the genie is hard of hearing. Do you really think I asked him for a 12 inch Bic?
star if funny

♥POLL♥ What is your favorite brand of:?

♥ Etheria ♥ asked:


Thanks in advanceto all those who answer.

Papertowels
Golf Clubs
Kitchen trash bags
Television
Dishwasher soap
Computer
Magazine
Smokes
Car
Toilet paper
Phone
Katsup

Is there a sport where you hit a little white ball and have a slave carry your weapons (clubs and bags)?

watzzzup asked:


Do golfers have no shame? How can industry sponsor this racist sport/activity to the tune of billions USD? Incredible.

Colonial power and privledge spread this awful racist game that wastes land and sends a message of abuse and entitlements. Golf is evil and hatred in action. No mistake, a tournament called the Masters in the south of the USA with its slave culture and plantations is further evidence of horrors.

Even Tiger Woods, golf prostitute, and his white euro Swedish wife should know better.
OK. So we have established then that golf is racist and USA is evil.

How to change or wipe out the filthy racist evil culture, by any means necessary? Solve the world…
It is not a matter of money - it is a matter of role servitude. The master - slave relationship is one that is as repugnant if the Cablasian is hitting the ball and not carrying the bag. Tiger is pathetic and the game/activity of golf is a cesspool of evil, in reality and by its symbolic slave labor. Golf is poison.
I will give you a few hours to think this through…

Gift for DAD?

Sugarrush asked:


i found the perfect gift for my dad. It was these golf bookends for his office. They were so pretty. So I ordered them and they came broken. So I asked for a new set. They came broken. Now with 5 days until christmas, i dont know what to get him. He’s into golf. Has TONS of golf balls. Works in a regular office. Has everything for a golf bag. Likes Pepsi. Tennesse Volunteers Football. Any Ideas! Thanks