August 2022 2 6 Report

Два мальчика поочередно поднимают из колодца ведро воды. Первый за 20 с, второй за 30с. Одинаковую ли работу они совершают? Одинаковы ли их мощности? Масса ведра 10 кг, глубина колодца 8м.

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