Предмет: Физика, автор: urstupid

Заяц, бегущий со скоростью 6 м/с обладает кинетической энергией, равной 90 Дж. Какова масса зайца (в кг)?

Ответы

Автор ответа: DedStar

Ответ:

Объяснение:

Дано:

V = 6 м/с

Eк = 90 Дж

________

m - ?

Eк = m·V²/2

m = 2·Eк / V²

m = 2·90 / 6² = 5 кг

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