Fizika je prirodna nauka koja objašnjava kako i zašto se... Show more
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Updated May 15, 2026
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Osnovni pojmovi fizike: Razumevanje prirode
1 / 5
Šta je fizika i ključni pojmovi
Fizika je kao detektiv koji rešava misterije prirode! Ona pokušava da odgovori na pitanja "kako?" i "zašto?" za sve što vidiš oko sebe.
Cilj fizike je da razume osnovna pravila (zakone) po kojima ceo svemir funkcioniše. Proučava materiju (sve što ima masu i zauzima prostor) i energiju (sposobnost da se izvrši neki rad).
Ključne reči koje moraš da znaš su priroda (sve što postoji oko nas), fizička pojava (bilo koja promena koju možeš da primetiš), i fizički zakon (pravilo u prirodi koje uvek važi). Na primer, zakon gravitacije objašnjava zašto jabuka uvek pada sa drveta na dole, a ne na gore.
Zapamti: Fizika nije samo učenje formula - važnije je razumeti zašto se nešto dešava!
Glavne oblasti fizike
Fizika je podeljena na različite oblasti, kao što je škola podeljena na predmete. Svaka oblast proučava određene pojave oko nas.
Mehanika proučava kretanje tela - zašto se automobil kreće, kako avion leti, zašto osećaš težinu. Termodinamika objašnjava toplotu - kako se led topi, zašto je zimi hladno, kako radi frižider.
Optika se bavi svetlošću - kako nastaje duga, zašto vidiš svoj odraz u ogledalu, kako rade naočare. Akustika proučava zvuk - kako nastaje zbog vibracija, kako čuješ muziku, zašto postoji eho.
Elektricitet i magnetizam objašnjavaju kako radi sijalica, zašto se magneti privlače i kako nastaje munja. Sve ove oblasti su povezane - na primer, sijalica koristi elektricitet da proizvede svetlost i toplotu!
Zanimljivost: Munja je ogromna električna varnica između oblaka i Zemlje!
Fizika u svakodnevnom životu - prvi deo
Fizika objašnjava sve što radiš svaki dan! Kad voziš bicikl, okrećeš pedale da stvoriš silu koja ga pokreće - to je mehanika.
Bicikl se zaustavlja zbog sile trenja između guma i puta. Da bi skrenuo, moraš da nagneš bicikl i promeniš smer sile.
Kada kuvaš čaj, rerna stvara toplotnu energiju koja se prenosi na šerpu, a zatim na vodu. Kada voda dostigne 100°C, ima dovoljno energije da pređe iz tečnog u gasovito stanje - to se zove ključanje.
Televizor koristi električnu energiju da radi, ekran emituje svetlost koja stvara sliku (optika), a zvučnici vibriraju i stvaraju zvučne talase koje čuješ (akustika).
Korisno: Eksperiment je ključan u fizici - naučnici proveravaju svoje ideje kroz oglede!
Pregled oblasti i priprema za test
Evo pregleda koji će ti pomoći za test:
Mehanika - kretanje, sile, ravnoteža (primer: padanje jabuke). Termodinamika - toplota, temperatura, energija (primer: topljenje leda). Optika - svetlost, ogledala, sočiva (primer: duga).
Akustika - zvuk, zvučni talasi, eho (primer: sviranje instrumenta). Elektricitet - struja, munje, elektroni (primer: rad sijalice).
Definicija za test: Fizika je osnovna prirodna nauka koja proučava materiju, energiju i njihove međusobne odnose, kao i osnovne zakone prirode.
Fizičke pojave su promene u prirodi koje možeš opaziti - kretanje, topljenje, svetljenje, zvuk. Cilj fizike je da objasni KAKO i ZAŠTO svet funkcioniše.
Za test: Moraš znati šta svaka oblast proučava i dati po jedan primer za svaku!
We thought you’d never ask...
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Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
Where can I download the Knowunity app?
You can download the app from Google Play Store and Apple App Store.
Is Knowunity really free of charge?
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
Most popular content in Fizika
Most popular content
Can't find what you're looking for? Explore other subjects.
Students love us — and so will you.
4.6/5
App Store
4.7/5
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
Osnovni pojmovi fizike: Razumevanje prirode
Fizika je prirodna nauka koja objašnjava kako i zašto se sve dešava oko nas - od toga zašto lopta pada na zemlju do toga kako radi tvoj telefon. Ova nauka proučava osnovna pravila po kojima ceo svemir funkcioniše, a mnogo... Show more
Šta je fizika i ključni pojmovi
Fizika je kao detektiv koji rešava misterije prirode! Ona pokušava da odgovori na pitanja "kako?" i "zašto?" za sve što vidiš oko sebe.
Cilj fizike je da razume osnovna pravila (zakone) po kojima ceo svemir funkcioniše. Proučava materiju (sve što ima masu i zauzima prostor) i energiju (sposobnost da se izvrši neki rad).
Ključne reči koje moraš da znaš su priroda (sve što postoji oko nas), fizička pojava (bilo koja promena koju možeš da primetiš), i fizički zakon (pravilo u prirodi koje uvek važi). Na primer, zakon gravitacije objašnjava zašto jabuka uvek pada sa drveta na dole, a ne na gore.
Zapamti: Fizika nije samo učenje formula - važnije je razumeti zašto se nešto dešava!
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Glavne oblasti fizike
Fizika je podeljena na različite oblasti, kao što je škola podeljena na predmete. Svaka oblast proučava određene pojave oko nas.
Mehanika proučava kretanje tela - zašto se automobil kreće, kako avion leti, zašto osećaš težinu. Termodinamika objašnjava toplotu - kako se led topi, zašto je zimi hladno, kako radi frižider.
Optika se bavi svetlošću - kako nastaje duga, zašto vidiš svoj odraz u ogledalu, kako rade naočare. Akustika proučava zvuk - kako nastaje zbog vibracija, kako čuješ muziku, zašto postoji eho.
Elektricitet i magnetizam objašnjavaju kako radi sijalica, zašto se magneti privlače i kako nastaje munja. Sve ove oblasti su povezane - na primer, sijalica koristi elektricitet da proizvede svetlost i toplotu!
Zanimljivost: Munja je ogromna električna varnica između oblaka i Zemlje!
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Fizika u svakodnevnom životu - prvi deo
Fizika objašnjava sve što radiš svaki dan! Kad voziš bicikl, okrećeš pedale da stvoriš silu koja ga pokreće - to je mehanika.
Bicikl se zaustavlja zbog sile trenja između guma i puta. Da bi skrenuo, moraš da nagneš bicikl i promeniš smer sile.
Kada kuvaš čaj, rerna stvara toplotnu energiju koja se prenosi na šerpu, a zatim na vodu. Kada voda dostigne 100°C, ima dovoljno energije da pređe iz tečnog u gasovito stanje - to se zove ključanje.
Televizor koristi električnu energiju da radi, ekran emituje svetlost koja stvara sliku (optika), a zvučnici vibriraju i stvaraju zvučne talase koje čuješ (akustika).
Korisno: Eksperiment je ključan u fizici - naučnici proveravaju svoje ideje kroz oglede!
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Pregled oblasti i priprema za test
Evo pregleda koji će ti pomoći za test:
Mehanika - kretanje, sile, ravnoteža (primer: padanje jabuke). Termodinamika - toplota, temperatura, energija (primer: topljenje leda). Optika - svetlost, ogledala, sočiva (primer: duga).
Akustika - zvuk, zvučni talasi, eho (primer: sviranje instrumenta). Elektricitet - struja, munje, elektroni (primer: rad sijalice).
Definicija za test: Fizika je osnovna prirodna nauka koja proučava materiju, energiju i njihove međusobne odnose, kao i osnovne zakone prirode.
Fizičke pojave su promene u prirodi koje možeš opaziti - kretanje, topljenje, svetljenje, zvuk. Cilj fizike je da objasni KAKO i ZAŠTO svet funkcioniše.
Za test: Moraš znati šta svaka oblast proučava i dati po jedan primer za svaku!
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
We thought you’d never ask...
What is the Knowunity AI companion?
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
Where can I download the Knowunity app?
You can download the app from Google Play Store and Apple App Store.
Is Knowunity really free of charge?
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
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Can't find what you're looking for? Explore other subjects.
Students love us — and so will you.
4.6/5
App Store
4.7/5
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user