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KoHbBCaTToraX
@KoHbBCaTToraX
July 2022
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Определите среднюю скорость конькобежца, прошедшего дистанцию 18 км так, что на 10 км ему потребовалось 10 мин., а на оставшиеся 8 км – 15 мин.
А) 10 м/с;В) 11м/с; С) 12 м/с; Д) 13 м/с; Е) 5 м/с
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kirills1
Vcp =
S₁ = 10 км = 10000 м
S₂ = 8 км = 8000 м
t₁ = 10 мин = 600 с
t₂ = 15 мин = 900 с
Vcp =
= 12 м/c - C)
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Answers & Comments
S₁ = 10 км = 10000 м
S₂ = 8 км = 8000 м
t₁ = 10 мин = 600 с
t₂ = 15 мин = 900 с
Vcp = = 12 м/c - C)