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Updated Mar 14, 2026
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Osnove Gibanja in Newtonovih Zakonov
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Osnovni pojmi gibanja
Gibanje pomeni, da telo spreminja svojo lego v prostoru skozi čas. To se sliši preprosto, toda za dobro razumevanje fizike moraš poznati natančne definicije.
Pot (s) je dolžina poti, ki jo telo prepotuje – merimo jo v metrih. Čas (t) je trajanje gibanja v sekundah. Hitrost (v) ti pove, kako hitro telo spreminja lego , pospešek (a) pa, kako hitro se spreminja hitrost .
Sila (F) je vzrok za vsako spremembo gibanja – lahko telo pospeši, upočasni ali mu spremeni smer. Masa (m) je lastnost telesa, ki se upira spremembam gibanja. Večja masa pomeni večjo vztrajnost.
💡 Pomembno: Za teste moraš znati vse osnovne enote – meter (m), sekunda (s), kilogram (kg), Newton (N).
Vrste hitrosti in gibanja
Povprečna hitrost je preprosta: celotno pot deliš s časom . Trenutna hitrost pa je tisto, kar kaže merilnik hitrosti v avtu – hitrost v točno določenem trenutku.
Pri enakomernem gibanju se telo giblje s konstantno hitrostjo, pospešek je nič. Pri neenakomernem gibanju se hitrost spreminja – to je večina gibanj v naravi.
Pospešek izračunaš tako: a = / čas. Če je pozitiven, telo pospešuje. Če je negativen, zavira (pojemek). Če je nič, gibanje je enakomerno.
💡 Nasvет za teste: Pri pretvarjanju enot si zapomni: 1 m/s = 3,6 km/h. Za pretvorbo iz km/h v m/s deliš z 3,6.
Prvi in drugi Newtonov zakon
Prvi Newtonov zakon (vztrajnost) pravi: telo vztraja v mirovanju ali enakomernem gibanju, dokler ga zunanja sila ne prisili k spremembi. Telesa so "lena" – ne želijo spreminjati stanja gibanja.
Masa je mera za vztrajnost. Večja masa = težje je spremeniti gibanje. Primer: ko avtobus zavira, te vrže naprej, ker tvoje telo želi nadaljevati z gibanjem.
Drugi Newtonov zakon je ključen: F = m × a. Pospešek je premo sorazmeren s silo in obratno sorazmeren z maso. Z isto silo lažje potisneš prazen voziček kot polnega.
💡 Za teste: Ta formula je osnova večine nalog! Vedno preveri, da imaš podatke v osnovnih enotah.
Tretji Newtonov zakon in primeri
Tretji Newtonov zakon : če prvo telo deluje na drugo z neko silo, deluje tudi drugo na prvo z enako veliko, a nasprotno usmerjeno silo. Formula: F₁→₂ = -F₂→₁.
Sile vedno nastopajo v parih! Ko hodiš, potisneš tla nazaj, tla pa potisnejo tebe naprej. Ko raketa izvrže pline navzdol, jo plini potisnejo navzgor.
Ključno: sili akcije in reakcije delujeta na različni telesi, zato se ne izničita. Zemlja privlači Luno z enako silo, kot Luna privlači Zemljo.
💡 Pogosta napaka: Ne pozabi, da sili delujeta na različni telesi! To je najpogostejše vprašanje na testih.
Praktični primeri računanja
Primer hitrosti: Avto prevozi 180 km v 2,5 ure. Povprečna hitrost = 180 km ÷ 2,5 h = 72 km/h. V m/s: 72 ÷ 3,6 = 20 m/s.
Primer pospeška: Kolesar pospešuje od 5 m/s do 9 m/s v 4 sekundah. Pospešek = (9 - 5) m/s ÷ 4 s = 1 m/s².
Primer sile: Zaboj z maso 40 kg mora pospeševal z 0,5 m/s². Potrebna sila = 40 kg × 0,5 m/s² = 20 N.
💡 Nasvет: Pri nalogah s silami si vedno nariši skico z vsemi silami. To zelo pomaga pri razumevanju!
Ključni nasveti za teste
Enote so ključne! Vedno pretvori v osnovne SI enote pred računanjem. Najpogostejša napaka je mešanje km/h z sekundami.
Razlika med maso in težo: masa je količina snovi (kg), teža pa sila, s katero Zemlja privlači telo (N). To ni isto!
Rezultanta sil: drugi Newtonov zakon velja za vsoto vseh sil na telo. Če deluje več sil, jih moraš sešteti vektorsko.
Hitra tabela za ponavljanje:
- Hitrost: v = s/t (kako hitro se premika)
- Pospešek: a = Δv/t (kako hitro spreminja hitrost)
- Sila: F = m × a (povzroči pospešek)
💡 Za odličen uspeh: Vedno si nariši skico problema in preveri enote v rezultatu!
We thought you’d never ask...
What is the Knowunity AI companion?
Our AI companion is specifically built for the needs of students. Based on the millions of content pieces we have on the platform we can provide truly meaningful and relevant answers to students. But its not only about answers, the companion is even more about guiding students through their daily learning challenges, with personalised study plans, quizzes or content pieces in the chat and 100% personalisation based on the students skills and developments.
Where can I download the Knowunity app?
You can download the app in the Google Play Store and in the 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 Naravoslovje
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
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
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
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
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 app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
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
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
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
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
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 app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user
Osnove Gibanja in Newtonovih Zakonov
Gibanje je ena najbolj osnovnih stvari v naravi – vse okoli nas se giblje, od avtov na cesti do atomov v telesu. Da bi razumel, zakaj se stvari gibljejo tako, kot se, moraš poznati ključne pojme kot so hitrost, pospešek... Show more
Osnovni pojmi gibanja
Gibanje pomeni, da telo spreminja svojo lego v prostoru skozi čas. To se sliši preprosto, toda za dobro razumevanje fizike moraš poznati natančne definicije.
Pot (s) je dolžina poti, ki jo telo prepotuje – merimo jo v metrih. Čas (t) je trajanje gibanja v sekundah. Hitrost (v) ti pove, kako hitro telo spreminja lego , pospešek (a) pa, kako hitro se spreminja hitrost .
Sila (F) je vzrok za vsako spremembo gibanja – lahko telo pospeši, upočasni ali mu spremeni smer. Masa (m) je lastnost telesa, ki se upira spremembam gibanja. Večja masa pomeni večjo vztrajnost.
💡 Pomembno: Za teste moraš znati vse osnovne enote – meter (m), sekunda (s), kilogram (kg), Newton (N).
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Vrste hitrosti in gibanja
Povprečna hitrost je preprosta: celotno pot deliš s časom . Trenutna hitrost pa je tisto, kar kaže merilnik hitrosti v avtu – hitrost v točno določenem trenutku.
Pri enakomernem gibanju se telo giblje s konstantno hitrostjo, pospešek je nič. Pri neenakomernem gibanju se hitrost spreminja – to je večina gibanj v naravi.
Pospešek izračunaš tako: a = / čas. Če je pozitiven, telo pospešuje. Če je negativen, zavira (pojemek). Če je nič, gibanje je enakomerno.
💡 Nasvет za teste: Pri pretvarjanju enot si zapomni: 1 m/s = 3,6 km/h. Za pretvorbo iz km/h v m/s deliš z 3,6.
Sign up to see the contentIt's free!
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Prvi in drugi Newtonov zakon
Prvi Newtonov zakon (vztrajnost) pravi: telo vztraja v mirovanju ali enakomernem gibanju, dokler ga zunanja sila ne prisili k spremembi. Telesa so "lena" – ne želijo spreminjati stanja gibanja.
Masa je mera za vztrajnost. Večja masa = težje je spremeniti gibanje. Primer: ko avtobus zavira, te vrže naprej, ker tvoje telo želi nadaljevati z gibanjem.
Drugi Newtonov zakon je ključen: F = m × a. Pospešek je premo sorazmeren s silo in obratno sorazmeren z maso. Z isto silo lažje potisneš prazen voziček kot polnega.
💡 Za teste: Ta formula je osnova večine nalog! Vedno preveri, da imaš podatke v osnovnih enotah.
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Tretji Newtonov zakon in primeri
Tretji Newtonov zakon : če prvo telo deluje na drugo z neko silo, deluje tudi drugo na prvo z enako veliko, a nasprotno usmerjeno silo. Formula: F₁→₂ = -F₂→₁.
Sile vedno nastopajo v parih! Ko hodiš, potisneš tla nazaj, tla pa potisnejo tebe naprej. Ko raketa izvrže pline navzdol, jo plini potisnejo navzgor.
Ključno: sili akcije in reakcije delujeta na različni telesi, zato se ne izničita. Zemlja privlači Luno z enako silo, kot Luna privlači Zemljo.
💡 Pogosta napaka: Ne pozabi, da sili delujeta na različni telesi! To je najpogostejše vprašanje na testih.
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Praktični primeri računanja
Primer hitrosti: Avto prevozi 180 km v 2,5 ure. Povprečna hitrost = 180 km ÷ 2,5 h = 72 km/h. V m/s: 72 ÷ 3,6 = 20 m/s.
Primer pospeška: Kolesar pospešuje od 5 m/s do 9 m/s v 4 sekundah. Pospešek = (9 - 5) m/s ÷ 4 s = 1 m/s².
Primer sile: Zaboj z maso 40 kg mora pospeševal z 0,5 m/s². Potrebna sila = 40 kg × 0,5 m/s² = 20 N.
💡 Nasvет: Pri nalogah s silami si vedno nariši skico z vsemi silami. To zelo pomaga pri razumevanju!
Sign up to see the contentIt's free!
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Ključni nasveti za teste
Enote so ključne! Vedno pretvori v osnovne SI enote pred računanjem. Najpogostejša napaka je mešanje km/h z sekundami.
Razlika med maso in težo: masa je količina snovi (kg), teža pa sila, s katero Zemlja privlači telo (N). To ni isto!
Rezultanta sil: drugi Newtonov zakon velja za vsoto vseh sil na telo. Če deluje več sil, jih moraš sešteti vektorsko.
Hitra tabela za ponavljanje:
- Hitrost: v = s/t (kako hitro se premika)
- Pospešek: a = Δv/t (kako hitro spreminja hitrost)
- Sila: F = m × a (povzroči pospešek)
💡 Za odličen uspeh: Vedno si nariši skico problema in preveri enote v rezultatu!
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 specifically built for the needs of students. Based on the millions of content pieces we have on the platform we can provide truly meaningful and relevant answers to students. But its not only about answers, the companion is even more about guiding students through their daily learning challenges, with personalised study plans, quizzes or content pieces in the chat and 100% personalisation based on the students skills and developments.
Where can I download the Knowunity app?
You can download the app in the Google Play Store and in the 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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Most popular content in Naravoslovje
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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
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
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
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
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 app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
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
I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️
Thomas R
iOS user
Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades
Brad T
Android user
Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍
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
I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend
Aubrey
iOS user
Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀
Marco B
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 app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!
Paul T
iOS user