yego.me
💡 Stop wasting time. Read Youtube instead of watch. Download Chrome Extension

Introduction to Middle school physics | Khan Academy


2m read
·Nov 10, 2024

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. Basically, everything's made of matter—me, you, um, the chair that I'm sitting on. This course is going to explore how we exist in the natural world. For example, we talk a little bit about movement and 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.

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. Then we also talk about force in a way where it doesn't touch you. 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 exist—whether it's sound waves or even the waves in the ocean.

What do you think's exciting?

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 where we fit in. Physics asks the most fundamental questions about how the universe works.

When I first learned about Newton's laws and fields and all the things that you just touched on, it started to give me goosebumps because I'm like, wow, we can finally understand how the universe fits together and then use that to make predictions and 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!

More Articles

View All
Tomasz Kaye: Voluntaryist and Creator of George Ought to Help [Mirror]
If we approve of state programs that redistribute wealth, we must also approve of threats of violence made against peaceful individuals, because this is how the funds are collected. On the other hand, most of us feel uncomfortable about threatening peacef…
Mars Gets Ready for Its Close-up | Podcast | Overheard at National Geographic
I’m getting to go on a guided tour of Mars. This is so freaking cool! You can see this spectacular panoramic landscape. This could be Canyonlands; this could be Death Valley. What’s the weather like in this section of Mars? Yeah, the forecast for tomorro…
Conditions for IVT and EVT: table | Existence theorems | AP Calculus AB | Khan Academy
We’re told this table gives a few values of function f. It tells us what f of x is equal to that x is equal to 2, 3, 4, and 5. Which condition would allow you to conclude that there exists a maximum value for f over the closed interval from 2 to 4? So pa…
Understanding scatterplots | Representing data | Grade 5 (TX TEKS) | Khan Academy
We’re told the table below shows the ages of six people and the number of pets they own. So, this row is age of people, and then the second row is the number of pets. So the person who’s nine years old owned four pets. The person who’s eight years old ow…
Peter Lynch: Avoid These 10 Investment Mistakes
This is a very important rule. This is a very, it’s one of the key rules: the stock doesn’t know you own it. Remember that you could be a miserable person; you could have, uh, you know, never helped anybody, never done anything right, had 67 spouses, neve…
Japanese Imperialism | World History | Khan Academy
What we’re going to discuss in this video is the evolution of Japan from being one of the most isolated countries in the world during the Tokugawa Shogunate to being the first Asian country to truly industrialize and become a world power. Historians will …