Middle school physics - NGSS
Introduction to Middle school physics
In this course, you'll develop a foundation in the physical laws that govern our world. From forces and motion to energy and waves, learn about the principles that explain how and why things work the way they do. Created by Iman Howard.
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- Is it possible that there are actually physical laws we haven't discovered yet?(15 votes)
- Why does it seem that every post here is a copy of another one here? 😕🤨🤔(7 votes)
- fr bro, its so weird(2 votes)
- Sal Khan: Is there physics in space- Hamza Ahmed(4 votes)
- Physics does apply to space because the objects in space follow the laws of physics.(6 votes)
- Everything you see is physics.(2 votes)
- yeah and everything you do not see is chemical reactions xD(7 votes)
- Is it possible that there are actually physical laws we haven't discovered(4 votes)
- It is possible(3 votes)
- Why is everything basically made out of matter?(3 votes)
- Matter is the amount of space something takes up. Since everything you can see takes up space, then it has matter(3 votes)
- how does this relate to being a physicist and how to study physics(4 votes)
- At1:55, there was this sound when you get the answer right.(2 votes)
- Yes! Khan Academy uses that correct answer sound for the endings of some of their videos.(2 votes)
- Physics does apply to space because the objects in space follow the laws of physics.(2 votes)
- Objects in space obey Newton's first law of physics:
"When an object is in motion it tends to stay in motion"
And since there is no drag, air resistance, or friction in space, everything in space does exactly what that law states, the universe is in constant motion!(2 votes)
- How do you know this(2 votes)
- Hi everyone. Sal Khan here and welcome to Middle School Physics. I have Iman Howard, who manages all of our STEM content. Iman, why should folks be excited about Middle School Physics? - So, Middle School Physics is like the only science out there that explains how things happen. And so basically, everything's made of matter. Me, you, the chair that I'm sitting on. And this course is gonna explore how we exist in the natural world. So, for example, we talk a little bit about movement in forces. And we learn that everything, everything that we have a collision with has this equal but opposite force that's applied when the collision happens. So, that's why when you give those high fives and then your hand starts stinging, it's because the same force you gave your buddy is the same force they gave you back. And then we also talk about force in a way where it doesn't touch you. So, like I'm thinking like Star Wars, there's like this force energy, like gravitational. There's magnetic energy, there's electric energy. And then finally, we get into waves. And we talk a little bit about how waves, you know, exists. Whether it's sound waves or even the waves in the ocean. What do you think's exciting about it? - Oh, well, that's a dangerous question to ask me. I wanted to be a physicist and I still aspire to be it. Because, you know, we kind of wake up in this cosmos. And we're just trying to understand what, where we fit in. And physics asks the most fundamental questions about how the universe works. And so when I first learned about Newton's laws, and fields, and all of the things that you just touched on, it started to give me goose bumps. Because I'm like, wow, we can finally understand how the universe fits together and then use that to make predictions. And then think about things that we don't understand. And there is so much that we don't understand. So I think this is the beginning of a very very exciting journey in physics. - I agree, Sal. (energetic blipping)