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FRIZZZON1
@FRIZZZON1
August 2022
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Тело одну треть пути двигалось со скорость 5м/c .Определите скорость тела на остальном пути, если средняя скорость на всём пути равна 7.5м/c.Ответ должен быть 10
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cvvkl
Verified answer
T₁ = S/(3*v₁) = S/(3*5 м/с) = S/15 c
t = S/v = S/7,5 м/с
t₂ = 2*S/(3*v₂)
t = t₁ + t₂
S/7,5 = S/15 +
2*S/(3*v₂)
1/7,5 = 1/15 + 2/(3*v₂)
2/(3*v₂) = 1/15
3*v₂ = 30
v₂ = 10 м/с
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Answers & Comments
Verified answer
T₁ = S/(3*v₁) = S/(3*5 м/с) = S/15 ct = S/v = S/7,5 м/с
t₂ = 2*S/(3*v₂)
t = t₁ + t₂
S/7,5 = S/15 + 2*S/(3*v₂)
1/7,5 = 1/15 + 2/(3*v₂)
2/(3*v₂) = 1/15
3*v₂ = 30
v₂ = 10 м/с