English, 11.10.2020 23:01, cia029587691
Read this excerpt from "Heads Up on Sports Safety." Your neck can also get hurt while playing football, so many helmet designers are using materials that prevent neck injuries. One common injury is whiplash, which is a sudden hit to the head that moves the neck very quickly. Neck padding can help, but materials that prevent the head from turning can decrease athletic performance. One alternative is to use a thermoplastic material that responds differently to different kinds of pressure. This material is soft when moved or pressed slowly but stiffens into a hard version of its shape when hit quickly. It has been used in bulletproof vests for at least a decade. One problem and its solution presented in this article is
Answers: 2
English, 22.06.2019 03:10, Marcynandrew
Which phrase from the article suggests a tone that is formal but subjective? a- "thirty-six inches long and sixteen inches wide" b- "loads of fun with it" c- "most generous and attractive" d- "must be new subscribers"
Answers: 2
Read this excerpt from "Heads Up on Sports Safety." Your neck can also get hurt while playing footba...
History, 06.05.2020 07:11
History, 06.05.2020 07:11
Mathematics, 06.05.2020 07:11
Mathematics, 06.05.2020 07:11