Solve of the problem - 319

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Uploaded: 19.12.2015
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Product description


Reshenie k zadache - Futbolnomu miachu massoi 400 g pri vypolnenii penalti soobshchili skorost 25 m/s. Esli miach popadaet v grud vrataria i otskakivaet nazad s toi zhe po moduliu skorostiu, to udar dlitsia 0,025 s. Esli vratar prinimaet udar na ruki, to cherez 0,04 s on gasit skorost miacha do nulia. Naiti sredniuiu silu udara v kazhdom sluchae

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