Kinematika in dinamika sta osnova za razumevanje gibanja v fiziki.... Show more
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Updated May 14, 2026
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Kinematika in dinamika sta osnova za razumevanje gibanja v fiziki.... Show more








Predstavljaj si, da opazuješ dirkalni avtomobil - kinematika te uči, kako izmeriti njegovo hitrost in pot, dinamika pa razloži, zakaj potrebuje tako močan motor za pospeševanje.
Kinematika se ukvarja z opisom gibanja brez spraševanja o vzrokih. Dinamika pa raziskuje sile, ki povzročajo spremembe v gibanju. To znanje potrebuješ za razumevanje delovanja vse od avtomobilov do robotov.
Ključni pojmi, ki jih moraš obvladati: gibanica (materialna točka, ki zanemarimo velikost), tir (pot gibanja), pot (s), hitrost (v) in pospešek (a). Pri hitrosti razlikuj med povprečno $\bar{v} = \frac{\Delta x}{\Delta t}$ in trenutno hitrostjo.
Pozor: Pospešek lahko pozitiven (pospeševanje) ali negativen (zaviranje)!

Ko gurneš težko omaro, občutiš, kaj pomeni sila - vzrok za spremembo gibanja. Sila (F) se meri v newtonih (N), kjer 1 N = 1 .
Masa (m) je mera za vztrajnost telesa - koliko se upira spremembam gibanja. Merimo jo v kilogramih in se ne spreminja ne glede na lokacijo. Teža (Fg) pa je sila, s katero Zemlja privlači telo: Fg = m × g.
Pomembno je razumeti razliko med maso in težo. Tvoja masa ostane enaka na Luni, teža pa bo šestkrat manjša zaradi manjše gravitacije.
Ključno razlikovanje: Masa je lastnost snovi, teža je sila!

Glede na hitrost in pospešek razdelimo enakomerno gibanje in enakomerno pospešeno gibanje .
Za enakomerno gibanje velja preprosta enačba: s = v × t. Za pospešeno gibanje pa potrebuješ tri ključne formule:
Hitrost po času t: . Pot po času t: . Torricellijeva enačba (brez časa): .
Te enačbe so tvoji najboljši prijatelji pri reševanju nalog iz kinematike.
Nasvet: Torricellijevo enačbo uporabi, ko ne poznaš časa!

Prvi Newtonov zakon (vztrajnost): Telo ohranja stanje mirovanja ali enakomernega gibanja, dokler ga zunanja sila ne prisili k spremembi. Hokejski plošček na ledu je odličen primer.
Drugi Newtonov zakon je najpomembnejši: . Večja sila pomeni večji pospešek, večja masa pa pri isti sili manjši pospešek. Smer pospeška je enaka smeri rezultante sil.
Tretji Newtonov zakon : Sile vedno nastopajo v parih. Ko brcneš žogo, tvoja noga deluje na žogo, žoga pa z enako silo nazaj na tvojo nogo.
Pomembno: Sili akcije in reakcije delujeta vsaka na svoje telo, zato se ne izničita!

Avto spelje iz mirovanja in v 10 sekundah doseže 72 km/h. Izračunajmo pospešek in pot.
Najprej pretvori enote: 72 km/h = = 20 m/s. Začetna hitrost v₀ = 0 m/s, končna v = 20 m/s, čas t = 10 s.
Pospešek: Iz v = v₀ + at dobimo: 20 = 0 + a × 10, torej a = 2 m/s². Pot: Iz s = v₀t + at² dobimo: s = 0 + × 2 × 100 = 100 m.
Odgovor: Pospešek je 2 m/s², pot pa 100 m.
Pozor na enote: Vedno pretvori km/h v m/s z deljenjem s 3,6!

Zaboj (50 kg) potiskamo s silo 200 N, trenje pa znaša 50 N. Kolikšen je pospešek?
Analiza sil: Potisna sila 200 N deluje v smeri gibanja, trenje 50 N v nasprotni smeri. Rezultanta sil: Frez = 200 N - 50 N = 150 N.
Uporabimo drugi Newtonov zakon: F = ma, torej 150 = 50 × a. Pospešek a = = 3 m/s².
Pri reševanju tovrstnih nalog je koristno narisati diagram sil, da ne pozabiš nobene.
Diagram prostega telesa: Nariši vse sile, ki delujejo na telo - to ti bo pomagalo pri reševanju!

Osnovne formule, ki jih moraš obvladati: Enakomerno gibanje s = v × t, pospešeno gibanje v = v₀ + at in s = v₀t + at², dinamika F = ma.
Newtonovi zakoni: Vztrajnost , F = ma (sila povzroči pospešek), akcija-reakcija (sile v parih).
Praktični nasveti: Vedno pretvori v SI enote pred računanjem, razlikuj med maso in težo, pozor na smer sil in rezultanto sil.
Zapomni si pravilo 3,6 za pretvorbo hitrosti: iz km/h v m/s deliš s 3,6, obratno pa množiš.
Za teste: Obvladaj pretvorbo enot, diagram sil in razlikovanje med kinematiko in dinamiko!
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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
Kinematika in dinamika sta osnova za razumevanje gibanja v fiziki. Kinematika opisuje, kako se telesa gibljejo, dinamika pa pojasnjuje, zakaj se gibljejo in kaj povzroča spremembe v gibanju.

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Predstavljaj si, da opazuješ dirkalni avtomobil - kinematika te uči, kako izmeriti njegovo hitrost in pot, dinamika pa razloži, zakaj potrebuje tako močan motor za pospeševanje.
Kinematika se ukvarja z opisom gibanja brez spraševanja o vzrokih. Dinamika pa raziskuje sile, ki povzročajo spremembe v gibanju. To znanje potrebuješ za razumevanje delovanja vse od avtomobilov do robotov.
Ključni pojmi, ki jih moraš obvladati: gibanica (materialna točka, ki zanemarimo velikost), tir (pot gibanja), pot (s), hitrost (v) in pospešek (a). Pri hitrosti razlikuj med povprečno $\bar{v} = \frac{\Delta x}{\Delta t}$ in trenutno hitrostjo.
Pozor: Pospešek lahko pozitiven (pospeševanje) ali negativen (zaviranje)!

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Ko gurneš težko omaro, občutiš, kaj pomeni sila - vzrok za spremembo gibanja. Sila (F) se meri v newtonih (N), kjer 1 N = 1 .
Masa (m) je mera za vztrajnost telesa - koliko se upira spremembam gibanja. Merimo jo v kilogramih in se ne spreminja ne glede na lokacijo. Teža (Fg) pa je sila, s katero Zemlja privlači telo: Fg = m × g.
Pomembno je razumeti razliko med maso in težo. Tvoja masa ostane enaka na Luni, teža pa bo šestkrat manjša zaradi manjše gravitacije.
Ključno razlikovanje: Masa je lastnost snovi, teža je sila!

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Glede na hitrost in pospešek razdelimo enakomerno gibanje in enakomerno pospešeno gibanje .
Za enakomerno gibanje velja preprosta enačba: s = v × t. Za pospešeno gibanje pa potrebuješ tri ključne formule:
Hitrost po času t: . Pot po času t: . Torricellijeva enačba (brez časa): .
Te enačbe so tvoji najboljši prijatelji pri reševanju nalog iz kinematike.
Nasvet: Torricellijevo enačbo uporabi, ko ne poznaš časa!

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Prvi Newtonov zakon (vztrajnost): Telo ohranja stanje mirovanja ali enakomernega gibanja, dokler ga zunanja sila ne prisili k spremembi. Hokejski plošček na ledu je odličen primer.
Drugi Newtonov zakon je najpomembnejši: . Večja sila pomeni večji pospešek, večja masa pa pri isti sili manjši pospešek. Smer pospeška je enaka smeri rezultante sil.
Tretji Newtonov zakon : Sile vedno nastopajo v parih. Ko brcneš žogo, tvoja noga deluje na žogo, žoga pa z enako silo nazaj na tvojo nogo.
Pomembno: Sili akcije in reakcije delujeta vsaka na svoje telo, zato se ne izničita!

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Avto spelje iz mirovanja in v 10 sekundah doseže 72 km/h. Izračunajmo pospešek in pot.
Najprej pretvori enote: 72 km/h = = 20 m/s. Začetna hitrost v₀ = 0 m/s, končna v = 20 m/s, čas t = 10 s.
Pospešek: Iz v = v₀ + at dobimo: 20 = 0 + a × 10, torej a = 2 m/s². Pot: Iz s = v₀t + at² dobimo: s = 0 + × 2 × 100 = 100 m.
Odgovor: Pospešek je 2 m/s², pot pa 100 m.
Pozor na enote: Vedno pretvori km/h v m/s z deljenjem s 3,6!

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Zaboj (50 kg) potiskamo s silo 200 N, trenje pa znaša 50 N. Kolikšen je pospešek?
Analiza sil: Potisna sila 200 N deluje v smeri gibanja, trenje 50 N v nasprotni smeri. Rezultanta sil: Frez = 200 N - 50 N = 150 N.
Uporabimo drugi Newtonov zakon: F = ma, torej 150 = 50 × a. Pospešek a = = 3 m/s².
Pri reševanju tovrstnih nalog je koristno narisati diagram sil, da ne pozabiš nobene.
Diagram prostega telesa: Nariši vse sile, ki delujejo na telo - to ti bo pomagalo pri reševanju!

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Join milions of students
Osnovne formule, ki jih moraš obvladati: Enakomerno gibanje s = v × t, pospešeno gibanje v = v₀ + at in s = v₀t + at², dinamika F = ma.
Newtonovi zakoni: Vztrajnost , F = ma (sila povzroči pospešek), akcija-reakcija (sile v parih).
Praktični nasveti: Vedno pretvori v SI enote pred računanjem, razlikuj med maso in težo, pozor na smer sil in rezultanto sil.
Zapomni si pravilo 3,6 za pretvorbo hitrosti: iz km/h v m/s deliš s 3,6, obratno pa množiš.
Za teste: Obvladaj pretvorbo enot, diagram sil in razlikovanje med kinematiko in dinamiko!
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.
You can download the app from Google Play Store and Apple App Store.
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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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