Force is a vector. What then is a vector? Think about how you would give directions to a friend. You would not say, just walk half a mile. The person may walk a half mile in the wrong direction! More information is needed. You may say, follow this particular road for a half mile. You may say, look for the green house on Sumter St. In both examples, you provided a direction. You also gave the distance. In other words, you provided a vector. You did not just give a distance. Both pieces of information are needed to find a location. This is just like describing forces. To explain forces, both size and direction are needed. Notice the girl in Figure 1.1. She is pushing the swing away from herself. Thats the direction of the force. She can give the swing a strong push or a weak push.

Question: "What does a strong push or a weak push have to do with force?"

Answer: "The direction of the force is independent of the amount of force"

Response: yes

The digestive system is the body system that digests food. It digest food in two ways, mechanically and chemically. Both help in the process of turning food into nutrients. The digestive system also eliminates solid food waste. The major organs of the digestive system include the mouth, esophagus, stomach, and small and large in- testines. These organs all work together to help you gain energy from the food you eat. Digestion starts in the mouth. When food is swallowed, it travels through the esophagus to the stomach. In the stomach, digestion continues and a small amount of absorption of nutrients takes place. Most chemical digestion and nearly all absorption of nutrients take place in the small intestine. This organ consists of three parts: duodenum, jejunum, and ileum. The large intestine is the last stop in the digestive system. This is where water is absorbed. The food not digested is released as waste.

Question: "In which part of the digestive system is water absorbed?"

Answer: "The colon"

Response: no

Thelma James was a prime candidate for a real estate ripoff: She is 68, has precious little money and can't read or write. "I won't lie to you. I was so-o-o excited," the widow and former duplex dweller said of the purchase of her first home, a sagging frame structure on Snowden. "I was glad to get me a house." When James realized she had been swindled she turned to Memphis Area Legal Services, which represented her in a lawsuit. Now, James's monthly house notes have dropped from $796 - more than twice her monthly income - to an affordable $247. Some of the people who took advantage of her through a questionable loan program were sent to jail. "I don't know what I would have done without Legal Services," said James. "They solved a lot of my problems." James is one of more than 3,000 clients served last year by MALS, which provides assistance for civil matters, such as domestic abuse and family-related problems, Social Security and Supplemental Security Income, veterans, housing and consumer fraud cases. Like James, most clients are elderly or female. Some are handicapped. Some need medical care or veteran's benefits. Some are trying to escape eviction or an abusive marriage. And 87 percent live at or below poverty level. Shelby County Mayor A C Wharton recently said Legal Services is important for those who, because of poverty or other struggles in life, think justice is an empty word. "They must be given reason to believe that the law is for them too," said Wharton, a former executive director of MALS. But MALS faces a funding crunch next year, brought on by a $200,000 shortfall from three revenue sources.

Question: "How does James fit into the usual clientele of MALS?"

Answer: "Elderly"

Response: yes

Washington (CNN) -- The U.S. Food and Drug Administration announced Wednesday that laboratory tests on popular smoking devices known as electronic cigarettes have found they contain carcinogens and other toxic chemicals dangerous to humans. E-cigarettes are battery-operated and contain cartridges filled with nicotine and other chemicals. Known as "e-cigarettes," the devices are battery-operated and contain cartridges filled with nicotine and other chemicals, spiced with flavors such as chocolate, cola or bubble gum. While manufacturers tout e-cigarettes as a "healthy way" to smoke, federal health officials say the devices turn nicotine, which is highly addictive, and other chemicals into a vapor that is inhaled by the user. "The FDA is concerned about the safety of these products and how they are marketed to the public," said Dr. Margaret A. Hamburg, commissioner of the FDA. CNN contacted Florida-based Smoking Everywhere, one of the largest manufacturers of e-cigarettes, after the FDA announcement, and a spokeswoman said the company had no comment. Because e-cigarettes have not been submitted to the FDA for evaluation or approval, the agency had no way of knowing the levels of nicotine or the amounts or kinds of other chemicals that the various brands of these products deliver to the user. That is why the FDA began to test them. The FDA's Division of Pharmaceutical Analysis analyzed the ingredients in a small sample of cartridges from two leading brands of e-cigarettes. In releasing its information, the FDA did not identify the two companies, but said in one sample, diethylene glycol -- a chemical used in antifreeze that is toxic to humans -- was detected. Other samples detected carcinogens that are dangerous to those who smoke them, the FDA said. The FDA has been examining and seizing shipments of non-U.S.-made e-cigarettes at the U.S. border since summer 2008. To date, 50 shipments have been stopped. The products examined thus far meet the definition of a combination drug-device product under the Federal Food, Drug, and Cosmetic Act. "We know very little about these devices, said Dr. Jonathan Samet, director of the Institute for Global Health at the University of Southern California, "but to say they are healthy -- that's highly doubtful."

Question: "What might be two characteristics that would appeal to smokers who wish to quit?"

Answer: "One mod"

Response:
no