Biology
Chemistry
AP Chemistry
English
AP English Literature
Physical Science
Dec 2, 2025
402
4 pages
kaneyi ^^ @totallykanee
Physics is all about how our universe works at its most basic level. It explores the relationship between... Show more
Physics is the science that explains how our universe operates. It focuses on four main concepts matter, energy, force, and motion - basically everything that makes up our world and how it all interacts!
Matter and energy are fundamental to physics. Matter is everything that takes up space, while energy is what causes change to happen. The cool thing is that matter can transform into energy (and vice versa) as shown in Einstein's famous equation E=mc².
Force and motion are connected concepts you experience every day. Force is simply a push or pull that happens when objects interact with each other. Motion describes how an object's position changes over time - like when you ride your bike or throw a ball.
Fun Fact Every single time you push or pull something, that object is pushing or pulling back on you with equal force - this becomes important when we learn about Newton's laws!
Newton's Laws of Motion explain how objects behave when forces act on them. The First Law (inertia) tells us that objects want to keep doing what they're already doing - staying still or moving in a straight line - unless something pushes or pulls them.
The Second Law shows that acceleration depends on force and mass. Push harder on something and it accelerates more, but heavier objects need more force to get moving. Think about how much harder it is to push a shopping cart when it's full versus empty!
The Third Law states that for every action force, there's an equal and opposite reaction force. When you jump, you push down on the ground, and the ground pushes back up on you with equal force!
Gravity is the force that pulls objects toward each other. The strength of gravity depends on mass and distance - the more massive objects are and the closer they are, the stronger the gravitational pull between them.
Remember This Newton's laws explain nearly all motion we see in everyday life - from why you need seatbelts to how rockets work!
Energy exists in many different forms that you encounter daily. Kinetic energy is in anything that's moving, while potential energy is stored (like in a stretched rubber band). Other forms include thermal (heat), chemical (in food and batteries), and electrical energy.
The Conservation of Energy law is one of physics' most important principles. Energy never disappears or appears from nowhere - it just changes form or transfers between objects. When you charge your phone, electrical energy transforms into chemical energy stored in the battery.
Waves are disturbances that carry energy from place to place. Think of dropping a pebble in water and watching the ripples spread. Sound is a special type of wave created by vibrations that travel through air, water, or solids to reach our ears.
Try This Next time you hear sound, remember you're detecting invisible waves of energy that traveled from their source to your ear!
Light is energy that can travel through empty space. Unlike sound, it doesn't need a medium to move through, which is why we can see stars even though space is mostly empty!
The electromagnetic spectrum includes all types of electromagnetic radiation, organized by wavelength and frequency. This includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays - all the same type of energy just with different properties.
Visible light is just a tiny portion of this spectrum that our eyes can detect. The different wavelengths within visible light appear as different colors, from red (longest wavelength) to violet (shortest wavelength).
Mind-Blowing Fact The light you see from some stars has been traveling for millions of years through space before reaching your eyes!
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.
You can download the app in the Google Play Store and in the Apple App Store.
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
71
Smart Tools NEW
Transform this note into: ✓ 50+ Practice Questions ✓ Interactive Flashcards ✓ Full Mock Exam ✓ Essay Outlines
App Store
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 THE SCHOOLGPT. 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 THE SCHOOLGPT. 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
kaneyi ^^
@totallykanee
Physics is all about how our universe works at its most basic level. It explores the relationship between matter, energy, forces, and motion that shape everything around us. Understanding physics helps us make sense of everyday experiences, from why objects... Show more
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Physics is the science that explains how our universe operates. It focuses on four main concepts: matter, energy, force, and motion - basically everything that makes up our world and how it all interacts!
Matter and energy are fundamental to physics. Matter is everything that takes up space, while energy is what causes change to happen. The cool thing is that matter can transform into energy (and vice versa) as shown in Einstein's famous equation E=mc².
Force and motion are connected concepts you experience every day. Force is simply a push or pull that happens when objects interact with each other. Motion describes how an object's position changes over time - like when you ride your bike or throw a ball.
Fun Fact: Every single time you push or pull something, that object is pushing or pulling back on you with equal force - this becomes important when we learn about Newton's laws!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Newton's Laws of Motion explain how objects behave when forces act on them. The First Law (inertia) tells us that objects want to keep doing what they're already doing - staying still or moving in a straight line - unless something pushes or pulls them.
The Second Law shows that acceleration depends on force and mass. Push harder on something and it accelerates more, but heavier objects need more force to get moving. Think about how much harder it is to push a shopping cart when it's full versus empty!
The Third Law states that for every action force, there's an equal and opposite reaction force. When you jump, you push down on the ground, and the ground pushes back up on you with equal force!
Gravity is the force that pulls objects toward each other. The strength of gravity depends on mass and distance - the more massive objects are and the closer they are, the stronger the gravitational pull between them.
Remember This: Newton's laws explain nearly all motion we see in everyday life - from why you need seatbelts to how rockets work!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Energy exists in many different forms that you encounter daily. Kinetic energy is in anything that's moving, while potential energy is stored (like in a stretched rubber band). Other forms include thermal (heat), chemical (in food and batteries), and electrical energy.
The Conservation of Energy law is one of physics' most important principles. Energy never disappears or appears from nowhere - it just changes form or transfers between objects. When you charge your phone, electrical energy transforms into chemical energy stored in the battery.
Waves are disturbances that carry energy from place to place. Think of dropping a pebble in water and watching the ripples spread. Sound is a special type of wave created by vibrations that travel through air, water, or solids to reach our ears.
Try This: Next time you hear sound, remember you're detecting invisible waves of energy that traveled from their source to your ear!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Light is energy that can travel through empty space. Unlike sound, it doesn't need a medium to move through, which is why we can see stars even though space is mostly empty!
The electromagnetic spectrum includes all types of electromagnetic radiation, organized by wavelength and frequency. This includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays - all the same type of energy just with different properties.
Visible light is just a tiny portion of this spectrum that our eyes can detect. The different wavelengths within visible light appear as different colors, from red (longest wavelength) to violet (shortest wavelength).
Mind-Blowing Fact: The light you see from some stars has been traveling for millions of years through space before reaching your eyes!
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.
You can download the app in the Google Play Store and in the Apple App Store.
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
71
Smart Tools NEW
Transform this note into: ✓ 50+ Practice Questions ✓ Interactive Flashcards ✓ Full Mock Exam ✓ Essay Outlines
App Store
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 THE SCHOOLGPT. 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 THE SCHOOLGPT. 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
