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Physics, 12.12.2019 19:31 alexvillaa121

Мальчик вышёл из школы и пошёл домой. первый километр пути он прошёл за 0,2 ч, а оставшиеся 2 км его подвёз на велосипеде друг, затратив на это 0,1 ч. с какой средней скоростью двишался мальчик?

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Мальчик вышёл из школы и пошёл домой. первый километр пути он прошёл за 0,2 ч, а оставшиеся 2 км его...

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