English, 17.07.2020 20:01, amanda1717
Read this excerpt from "Heads Up on Sports Safety.”
The dangers to your head depend on the sport, but some general principles guide helmet design. First, the helmet needs to be as cool and lightweight and comfortable as possible. Second, the helmet needs to be hard enough and fit well enough to protect the skull and brain. For some athletes, like hockey goalies or baseball catchers, the helmet also needs to protect the face from fast pucks or balls. Third, it must not prevent the wearer from seeing or hearing. Fourth, it cannot cause more injuries than it prevents.
It turns out that the way to address many of these concerns is to use hard but flexible, light, strong materials on the outside and soft materials on the inside. Scientists create new plastics all the time, but sometimes the best designs come from using old materials in new ways. One recent design makes the shell of helmets out of Kevlar, the same kind of light plastic used in bulletproof vests.
Which is a key detail that supports the main idea that there are general principles that guide sports helmet design?
Answers: 2
English, 21.06.2019 23:10, Darakeji419
Your essay should be short, just 250 words, and it can be written on any subject. it should contain an example of parallel structure, an example ofevery type of phrase and clause outlined in this lesson, an example of two independent clauses connected by asemicolon, and an example of a colon. if you are struggling to come up with an idea for an essay, consider writing itabout the themes present in one of the texts you have read already.
Answers: 2
English, 22.06.2019 00:30, Jaressayf4466
Hur ! asap what is the structure of the following sentence? although i have already visited africa, i would certainly like to return. a) compound b) compound-complex c) complex d) simple
Answers: 1
Read this excerpt from "Heads Up on Sports Safety.”
The dangers to your head depend on the sport, b...
Mathematics, 14.09.2021 14:00
Mathematics, 14.09.2021 14:00
Biology, 14.09.2021 14:00
Mathematics, 14.09.2021 14:00