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FYZ/2024-10-16-FYZ.txt
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FYZ/2024-10-16-FYZ.txt
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nákladní vlak vyjel rychlostí 36km/h
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Stejným směrem vyjel o 30 minut později vyjel rychík rychlostí 72km/h
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za jakou dobu dojede rychlík n. vlak
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v₁ = 36 km/h
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v₂ = 72 km/h
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t₀ = 30 min
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t = ?
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s = ?
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s₁ = s₂
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v₁t = v₂(t - t₀)
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v₁t = v₂t = v₂t = v₂t₀
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v₂t₀ = v₂t - v₁t
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v₂t₀ = t(v₂ - v₁)
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t = v₂t₀/v₂ - v₁
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{t} = 72 * 1/2/72 - 36
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t (h)|0|0.5|1 | 2 |
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s₁(km)|0|18 |36|72 |
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s₂(km)|0| 0 |36|108|
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14
PDV/2024-10-15-PDV.txt
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PDV/2024-10-15-PDV.txt
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článek
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poutavý titulek
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perex
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ilustračníobr.
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zdroj!!
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box
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citace
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autor
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