One problem and its solution presented in this article is

the possibility of whiplash and the use of thermoplastic material to prevent the neck from turning very quickly.
the efforts made by helmet designers to find new protective materials and the use of thermoplastic material to prevent neck injuries.
the fact that neck injuries can be hard to avoid and the occurrence of whiplash when the head moves quickly.
the probability of head injuries in sports and the use of bulletproof vests by athletes to stay safe