Intro to vectors & scalars | One-dimensional motion | Physics | Khan Academy

Distance, displacement, speed and velocity. Difference between vectors and scalars. Created by Sal Khan.

Physics on Khan Academy: Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'll need a solid understanding of algebra and a basic understanding of trigonometry.

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[Aquarithyst]

Sometimes I think that the teachers on YouTube and other online sources make things more clear than the ones at school... But that might just be me :I

[annelegaspi]

He always says "I hope I helped you a little bit" but he doesn't realize how much of a HUGE HUGE help he is to everyone out here!! Thank you, Sal Khan!!!

[cwazychik]

does this guy know about every single concept on earth?? good teaching!

[RucrazyRogue]

Goodbye texbooks, hello Khan Academy!

[Sgtkerororo]

Me: ._. *Blankly stares at the screen as my physics teacher makes no sense about physics*
Class finishes
*Plays Khan Academy*

[henrikhove]

*draws in green*
"let me just draw this in a more earth color"
*draws in yellow*
"there we go, green"

But seriously, great video! Khan academy is a lifesaver for students

[Dreitiquiz]

What's even more amazing is his mouse control. I can't even draw like that with a pencil.

[danielmartens]

U taught me more in 8 minutes and 39 seconds than my science 10 teacher taught in a week!

[cee]

This was actually so helpful. My physics teacher always goes off topic but blames us for doing bad. 🙄 she's so discouraging

[corey]

This channel is literally life changing.

[rumanahmedshaikh]

I didn't know how to directly contact u
so I'm writing dis massage to u
I m legally blind n a science student
if u dig a bit hopefully u ll figure out how difficult to study n do all d practical lab work
my teacher explained in black board n sometimes on copies
which r way far for me to see n there is not solution I could think o until a came to know about ur channel
u r my official physics n chemistry teacher
I didn't wanted to live n even though to end dis life
u saved my life
thank u Mr. Khan
hopefully u ll get dis massage

[QuikFlickOfficial]

The real magic is how this guy can write with his mouse

[ElRadioDJ]

Since Physics is a total bitch to me but at least Khan Academy helped me out for the first part although I have to be prepared for my first exam in College Physics! Thanks!! :)

[sludgerat]

9 years later and he still helps people understand this kind of stuff better than a teacher can.

[tisa]

Wow! Khan academy is A LOT better than my school.

[dilruba]

I saw all the video in Khan academy, I already know 50% of that.But I am new in USA.I dont know that much English, but the math and science u r teaching are very easy.the science I know, 9th grade student don't understand that.I have a cousin in USA, he read's in 9th grade

[artistenoire]

I love you, Sal Khan. 
You and Bill Nye deserve medals of honor from the US government for being amazing.

[Yeiyn]

I took Physics last year as a part of my major, and I decided to just watch a few seconds of this video to see what Sal goes over (just came from Calculus derivatives videos), and...within like 1 minute, he taught Vectors and scalars so, so much simpler than how we learned in class.  Thank you SO MUCH!
SUBSCRIBED!!!  I may be watching every day now! :-)

[jiunting]

Summary**
change in position = distance
change in position + direction = displacement
how fast something is goin' = speed
how fast + direction = velocity

[avyaya]

Is he colour blind, like cause thats not green 1:01 Or am i colour blind