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Hitac
From Wikipedia, the free encyclopedia
Hitac ili projektil (lat. proicio - baciti, hitnuti[1]) je izbačaj tijela u prostor.[2] Gibanje hica je složeno gibanje koje nastaje kada na izbačeni hitac djeluje sila teže.
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U užem smislu, hitac je fizičko tijelo, naprava ili složeno sredstvo koje gađa neki cilj. Projektil može biti ispaljen iz puške (metak, zrno), iz topa (granata), raketnog lansera, broda i sl.[3] Kada nogometaš pukne loptu, ona se može smatrati projektilom. Projektil se najčešće spominje u vojnom smislu u kojem označava oružje koje koje nanosi izravnu štetu čovjeku, objektu, životinji i sl. Neki projektili su punjeni i eksplozivnim sredstvom kako bi se povećala učinkovitost projektila, dok su neki izrađeni od nekog tvrdog materijala koji se velikom brzinom zabija u tijelo čovjeka ili vozila.