Ahojte, ako to mam ratat? Uz dlhsi cas s tym voabec nwm pohnut.
Strela pohybujúca sa rýchlosťou v1 prerazí dosku hrubú 3,6 cm a jej rýchlosť klesne na 80 % pôvodnej. Aká je maximálna hrúbka dosky, ktorú je strela schopná preraziť, ak ostatné vplyvy zanedbáme?
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