Предмет: Физика, автор: Vol35EVK

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Автор ответа: ElGraf

Ответ:

20 минут

Объяснение:

S = v1 * t1 = 10 * 30 * 60 ( перевел секунды)= 18000(м)

Далее, т.к. S общая, находим t2 : t2 = S/v2 =18000 / 15 = 1200 (ceк) что равно 20 минутам

Автор ответа: mingazova2601

Ответ:

решение на фото, будет 20

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Vol35EVK: спасибо что показал на фото

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Очень срочно! Завтра сдавать! Даю все свои баллы!