Relativna)brzina) Newtonovi)zakoni)
Transcript of Relativna)brzina) Newtonovi)zakoni)
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Relativna brzina Newtonovi zakoni
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Pilot laganog aviona s brzinom od 200 km/h u odnosu na zrak želi letje: na zapad. Puše jaki vjetar sa sjevera
brzinom od 120 km/h. Ako pilot usmjeri nos aviona negdje između sjevera i zapada tako da njegova putanja u odnosu na Zemlju bude prema zapadu, kolika će bi: njegova brzina u
odnosu na tlo?
a. 80 km/h b. 120 km/h c. 160 km/h d. 180 km/h e. Nije moguce letje: na zapad u toj situaciji
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Isaac Newton (1642.-‐1717.)
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Isaac Newton (1642.-‐1717.)
• rođen 14 tjedana prerano, na Božić, 4.1.1642.
• Nikad mu na glavu nije pala jabuka
• Tražio eliksir života, kamen mudraca i predvidio apokalipsu
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Isaac Newton (1642.-‐1717.)
• rođen 14 tjedana prerano, na Božić, 4.1.1642.
• Nikad mu na glavu nije pala jabuka
• Tražio eliksir života, kamen mudraca i predvidio apokalipsu
• I na kraju... pas mu je zapalio laboratorij
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Sila
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Corpus omne perseverare in statu suo quiescendi vel movendi uniformiter in
directum, nisi quatenus a viribus impressis cogitur statum illum mutare.
Svako tijelo ustraje u svojem stanju mirovanja ili jednolikog
gibanja, osim kad ga na promjenu stanja natjera natisnuta sila