Вот инфа: https://www.yaklass.ru/p/fizika/8-klass/izuchaem-teplovye-iavleniia-12324/vnutrenniaia-energiia-dva-sposoba-izmeneniia-vnutrennei-energii-12579/re-ff29469a-d97d-4387-9e6f-1569556056d6#:~:text=%D0%9E%D0%BF%D1%80%D0%B5%D0%B4%D0%B5%D0%BB%D1%8F%D1%8E%D1%82%20%D0%BA%D0%B8%D0%BD%D0%B5%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D1%83%D1%8E%20%D1%8D%D0%BD%D0%B5%D1%80%D0%B3%D0%B8%D1%8E%20%D0%BF%D0%BE%20%D1%84%D0%BE%D1%80%D0%BC%D1%83%D0%BB%D0%B5,2%20%E2%8B%85%20E%20%D0%BA%D0%B8%D0%BD%20m%20.
450 000
Объяснение:
Екин = (10 * 300^2) / 2 = (10 * 90 000) / 2 = 450 00 Дж
Вот инфа: https://www.yaklass.ru/p/fizika/8-klass/izuchaem-teplovye-iavleniia-12324/vnutrenniaia-energiia-dva-sposoba-izmeneniia-vnutrennei-energii-12579/re-ff29469a-d97d-4387-9e6f-1569556056d6#:~:text=%D0%9E%D0%BF%D1%80%D0%B5%D0%B4%D0%B5%D0%BB%D1%8F%D1%8E%D1%82%20%D0%BA%D0%B8%D0%BD%D0%B5%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D1%83%D1%8E%20%D1%8D%D0%BD%D0%B5%D1%80%D0%B3%D0%B8%D1%8E%20%D0%BF%D0%BE%20%D1%84%D0%BE%D1%80%D0%BC%D1%83%D0%BB%D0%B5,2%20%E2%8B%85%20E%20%D0%BA%D0%B8%D0%BD%20m%20.