Hmotnosť stretávaš každý deň - keď si kupuješ jedlo, keď... Show more
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Updated Mar 24, 2026
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Ako správne merať hmotnosť: Základy a tipy
1 / 5
Úvod k meraniu hmotnosti
Hmotnosť je vlastnosť každého predmetu okolo teba. Jednoducho povedané, hovorí ti, koľko "veci" alebo materiálu je v nejakom telese. Čím viac látky, tým väčšia hmotnosť.
Na meranie hmotnosti používame váhy - osobné, kuchynské alebo obchodné. Určite si ich už videl v akcii! Základné jednotky sú gram (g) pre ľahké veci ako cukríky, kilogram (kg) pre ťažšie veci ako ľudia, a tona (t) pre veľmi ťažké veci ako autá.
Pozor! Hmotnosť nie je to isté ako váha! Hmotnosť je množstvo látky, váha je sila. V bežnom živote však často hovoríme "koľko vážiš?", ale myslíme tím "akú máš hmotnosť?".
Kľúčové pojmy a meranie
Existuje veľa typov váh pre rôzne účely. Osobná váha je doma na váženie ľudí, kuchynská váha slúži na váženie potravín, a obchodnú váhu vidíš pri nakupovaní ovocia.
Keď meriáš hmotnosť, vždy musíš dávať pozor, aby váha bola presná a aby si ju používal správne. Rôzne veci potrebujú rôznu presnosť - na lieky treba veľmi presné váhy, na zemiaky stačí menej presná.
Základná jednotka hmotnosti je kilogram (kg). Táto jednotka je základ pre všetky ostatné premeny, ktoré budeš potrebovať.
Tip! Skús si predstaviť, koľko asi váži 1 kg cukru alebo 100 g čokolády. Pomôže ti to pri riešení úloh!
Jednotky hmotnosti a premeny
Tu sú tri hlavné jednotky a ich použitie:
- Gram (g) - cukrík, ceruzka, korenie
- Kilogram (kg) - človek, batoh, vrece zemiakov
- Tona (t) - auto, nákladné auto, slon
Dôležité premeny, ktoré musíš vedieť nazpamäť:
- 1 kg = 1000 g
- 1 t = 1000 kg
- 1 g = 0,001 kg
Ako prevádzať jednotky? Z väčšej na menšiu násobíš . Z menšej na väčšiu delíš .
Nezabudni! Vždy si najprv skontroluj jednotky! Pred počítaním sa uisti, že všetky hmotnosti sú v rovnakých jednotkách.
Riešené príklady
Príklad 1: Balíček cukríkov váži 250 g. Koľko je to kilogramov? Riešenie: 250 g ÷ 1000 = 0,25 kg
Príklad 2: Mama kúpila 3 kg jabĺk. Koľko je to gramov?
Riešenie: 3 kg × 1000 = 3000 g
Príklad 3: Na koláč potrebuješ 500 g múky a 0,2 kg cukru. Aká je celková hmotnosť v gramoch? Riešenie: Najprv preveď cukor: 0,2 kg × 1000 = 200 g. Potom sčítaj: 500 g + 200 g = 700 g.
Vidíš? Nie je to také ťažké! Kľúčom k úspechu je postupné riešenie a kontrola jednotiek.
Rada! Pri zložitejších úlohách si najprv napíš, čo máš dané a čo hľadáš. Potom postupuj krok za krokom.
Zhrnutie a tipy na test
Najdôležitejšie veci na zapamätanie:
- Hmotnosť = množstvo látky v telese
- Základná jednotka: kilogram (kg)
- Premeny: 1 kg = 1000 g, 1 t = 1000 kg
- Hmotnosť ≠ váha (hmotnosť je látka, váha je sila)
Tipy na úspech: Vždy kontroluj jednotky pred počítaním. Ak nie sú rovnaké, najprv ich preveď. Odhad ti pomôže skontrolovať, či je výsledok rozumný.
Presnosť záleží na účele - lieky potrebujú presné váhy, zemiaky nie. Toto ťa už nikdy nezaskočí na teste!
Pamätaj si! Postupné riešenie a kontrola jednotiek sú tvoje najlepšie kamarátky pri počítaní s hmotnosťou.
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 Fyzika
Most popular content
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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
Ako správne merať hmotnosť: Základy a tipy
Hmotnosť stretávaš každý deň - keď si kupuješ jedlo, keď sa vážiš, alebo keď mama pečie koláč. Je to jedna zo základných vecí vo fyzike, ktorú musíš vedieť merať a s ktorou musíš vedieť počítať.
Úvod k meraniu hmotnosti
Hmotnosť je vlastnosť každého predmetu okolo teba. Jednoducho povedané, hovorí ti, koľko "veci" alebo materiálu je v nejakom telese. Čím viac látky, tým väčšia hmotnosť.
Na meranie hmotnosti používame váhy - osobné, kuchynské alebo obchodné. Určite si ich už videl v akcii! Základné jednotky sú gram (g) pre ľahké veci ako cukríky, kilogram (kg) pre ťažšie veci ako ľudia, a tona (t) pre veľmi ťažké veci ako autá.
Pozor! Hmotnosť nie je to isté ako váha! Hmotnosť je množstvo látky, váha je sila. V bežnom živote však často hovoríme "koľko vážiš?", ale myslíme tím "akú máš hmotnosť?".
Sign up to see the contentIt's free!
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Kľúčové pojmy a meranie
Existuje veľa typov váh pre rôzne účely. Osobná váha je doma na váženie ľudí, kuchynská váha slúži na váženie potravín, a obchodnú váhu vidíš pri nakupovaní ovocia.
Keď meriáš hmotnosť, vždy musíš dávať pozor, aby váha bola presná a aby si ju používal správne. Rôzne veci potrebujú rôznu presnosť - na lieky treba veľmi presné váhy, na zemiaky stačí menej presná.
Základná jednotka hmotnosti je kilogram (kg). Táto jednotka je základ pre všetky ostatné premeny, ktoré budeš potrebovať.
Tip! Skús si predstaviť, koľko asi váži 1 kg cukru alebo 100 g čokolády. Pomôže ti to pri riešení úloh!
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Jednotky hmotnosti a premeny
Tu sú tri hlavné jednotky a ich použitie:
- Gram (g) - cukrík, ceruzka, korenie
- Kilogram (kg) - človek, batoh, vrece zemiakov
- Tona (t) - auto, nákladné auto, slon
Dôležité premeny, ktoré musíš vedieť nazpamäť:
- 1 kg = 1000 g
- 1 t = 1000 kg
- 1 g = 0,001 kg
Ako prevádzať jednotky? Z väčšej na menšiu násobíš . Z menšej na väčšiu delíš .
Nezabudni! Vždy si najprv skontroluj jednotky! Pred počítaním sa uisti, že všetky hmotnosti sú v rovnakých jednotkách.
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Riešené príklady
Príklad 1: Balíček cukríkov váži 250 g. Koľko je to kilogramov? Riešenie: 250 g ÷ 1000 = 0,25 kg
Príklad 2: Mama kúpila 3 kg jabĺk. Koľko je to gramov?
Riešenie: 3 kg × 1000 = 3000 g
Príklad 3: Na koláč potrebuješ 500 g múky a 0,2 kg cukru. Aká je celková hmotnosť v gramoch? Riešenie: Najprv preveď cukor: 0,2 kg × 1000 = 200 g. Potom sčítaj: 500 g + 200 g = 700 g.
Vidíš? Nie je to také ťažké! Kľúčom k úspechu je postupné riešenie a kontrola jednotiek.
Rada! Pri zložitejších úlohách si najprv napíš, čo máš dané a čo hľadáš. Potom postupuj krok za krokom.
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Zhrnutie a tipy na test
Najdôležitejšie veci na zapamätanie:
- Hmotnosť = množstvo látky v telese
- Základná jednotka: kilogram (kg)
- Premeny: 1 kg = 1000 g, 1 t = 1000 kg
- Hmotnosť ≠ váha (hmotnosť je látka, váha je sila)
Tipy na úspech: Vždy kontroluj jednotky pred počítaním. Ak nie sú rovnaké, najprv ich preveď. Odhad ti pomôže skontrolovať, či je výsledok rozumný.
Presnosť záleží na účele - lieky potrebujú presné váhy, zemiaky nie. Toto ťa už nikdy nezaskočí na teste!
Pamätaj si! Postupné riešenie a kontrola jednotiek sú tvoje najlepšie kamarátky pri počítaní s hmotnosťou.
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 Fyzika
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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