Предмет: Физика, автор: maksimgribanov2004

Из пистолета был произведен выстрел. Определите с какой скоростью полетела пуля массой 20 г, если пистолет массой 1,2 кг отлетел со скоростью 3м\с.

Ответы

Автор ответа: Елизавета1712
2

Ответ:

Дано:

m1 = 1,2 кг

V1 = 3м/с

m2 = 20г

V2 = ?

СИ:

m2 = 0,00002кг

Решение:

\frac{v1}{v2} = \frac{m1}{m2}

V1•m1 = V2 •m2

v2 = \frac{1.2 \times 3}{0.00002}

V2 = 180000м/с

Ответ: V пули = 180000м/с

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