https://www.abitur.by/fizika/zadachi-po-fizike/zakon-soxraneniya-i-izmeneniya-mexanicheskoj-energii-zadachi/yabloko-massoj-brosheno-vertikalno-vverx-so-skorostyu-vychislite-ego-polnuyu-kineticheskuyu-i-potencialnuyu-energiyu-pri-podyome-na-vysotu/