Предмет: Алгебра, автор: Николай12081998

Поезд шел со скоростью 40 кмч. пассажир заметил, что встречный поезд прошел мимо него за 3 секунды. Ппределите скорость встречного поезда, если известно, что его длина 75 м

Ответы

Автор ответа: vic28

0

75/3=25 м/с=90 км/ч;
90-40=50 км/ч
Ответ: 50 км/ч

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