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4. Who is credited with inventing Kevlar?
a. Robert Kevlar
b. Richard Armellino
c. Stephanie Kwolek
d. None of the above

5. Which of the following caused the search for a fabric like Kevlar?
a. A shortage in the gasoline supply
b. A desire to protect police officers
c. The need to replace asbestos
d. The want of better musical instruments

6. A vest made of 15 layers of Kevlar with no steel plates could stop all but which of the following rounds?
a. Handgun rounds
b. Shotgun pellets
c. Rifle rounds
d. It could stop all of the above

7. Why did people begin using asbestos in buildings?
a. It was extremely durable
b. It was very heavy
c. It was poisonous to insects
d. It was resistant to fire

8. According to the article, how many American police officers are estimated to wear bulletproof vests daily?

Sagot :

GinnyAnsweridn

Final answer:

Susan Kwolek invented Kevlar, sought as replacement for asbestos, and used in protective vests.


Explanation:

Susan Kwolek is credited with inventing Kevlar, a synthetic polymer known for its strength and durability. Kevlar was developed as a replacement for steel in tires, offering a high tensile strength-to-weight ratio.

The search for a fabric like Kevlar was driven by the need to replace asbestos, which was being phased out due to health risks associated with exposure.

A vest made of 15 layers of Kevlar without steel plates can stop all but rifle rounds, showcasing the material's protective capabilities.


Learn more about Kevlar here:

https://brainly.com/question/11943691


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