create: index.html, kineticheskaya-energiya.html, ponyatie-impulsa.html, potencialnaya-energiya.html, README.md, style.css, teorema-ob-izmenenii-impulsa.html, uprugie-i-neuprugie-stolknoveniya.html, zadacha.html, zakon-sohraneniya-energii.html, zakon-sohraneniya-impulsa.html