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

Courses on Khan Academy are always 100% free. Start practicing-and saving your progress-now: www.khanacademy.org/science/p...
Distance, displacement, speed and velocity. Difference between vectors and scalars. Created by Sal Khan.
Watch the next lesson: www.khanacademy.org/science/p...
Missed the previous lesson? www.khanacademy.org/science/p...
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.
About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software, deep data analytics and intuitive user interfaces to help students and teachers around the world. Our resources cover preschool through early college education, including math, biology, chemistry, physics, economics, finance, history, grammar and more. We offer free personalized SAT test prep in partnership with the test developer, the College Board. Khan Academy has been translated into dozens of languages, and 100 million people use our platform worldwide every year. For more information, visit www.khanacademy.org, join us on Facebook or follow us on Twitter at @khanacademy. And remember, you can learn anything.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to Khan Academy’s Physics channel: / channel
Subscribe to Khan Academy: kzbin.info_...

[@annelegaspi3961]

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!!!

[@Aquarithyst]

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

[@arondabetinarysadelt.2790]

No that's totally true..

[@jaxbenson3422]

100% accurate

[@vaibhavpatil2611]

Tianna Woo that's the fact

[@hiaQadeer]

Tianna Woo there are reasons for this 1- Physiologically you are charged to learn more efficiently for these videos. 2- These are short and brief, and easy to use or follow. You are not bond to follow them on pacific schedule. And whenever you get them you are fresh mind. 3- These teachers are making videos with passion to learn I guess.

[@pushkarsoni8927]

Hia Qadeer also we don't hesitate to replay the video in case we don't understand because at school this problem occurs most, we cannot replay our teachers. peers makes us hesitate. 2. we get reply to our questions in the comment section easily i guess.

[@cwazychik]

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

[@GeekZonelive]

amber M chk out my vectorr videos

[@bhanuchakraborti264]

Geek Zone

[@GeekZonelive]

??

[@LearnMathsFree]

+amber M I agree, his teaching is very good.

[@firmestree6498]

besides grammar

[@henrikhove7102]

*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

[@HighHell99]

xD

[@mariammamamachen3515]

Wasn't it blue the 1st time though 🤔

[@thedogdogification]

Oh my good ness I was worried something was wrong with my monitor! But as you say, this really is a helpful video.

[@shannenlibres2365]

Is he colourblind then? That's gonna be a problem if he teaches with colors a lot

[@jacobmark1099]

to me, the first one looked more like blue. The second one was definitely yellow tho lol.

[@RucrazyRogue]

Goodbye texbooks, hello Khan Academy!

[@insideblankoutside]

You said it

[@shahriartanvir874]

mee too...

[@sanjeetsingh4354]

RucrazyRogue don't do that khan academy is just a channel but ur textbook has whole universe in it

[@chandler1473]

Yattin Manhas it's also an interactive application!

[@tabarakaljemelawy9226]

THATS FUNNY

[@sludgerat]

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

[@shannenlibres2365]

Is this subject in the SAT?

[@incipimitusiterum4261]

true, but he still doesn't know what the color green is.

[@incipimitusiterum4261]

@@shannenlibres2365 god no. absolutely not

[@Dreitiquiz]

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

[@hanadi5470]

Drei Detiquiz same

[@nicolalastella8107]

He uses like a digital pencil which is connected to his mouse

[@BeeniBeeni-uk2pv]

bro he is using a stylus you numpty

[@corey5454]

This channel is literally life changing.

[@cee9945]

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

[@danielmartens7639]

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

[@gobbleyourface1440]

lol

[@jacobchristie5818]

that's because, unlike school, on the internet you can keep recording until you get it right. that's why the internet is the best learning resource.

[@andreafernandez445]

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

[@nibbinoodle05]

Lmao i’m doing that rn its lunch for me right now

[@fairyland6855]

Hello, I have a question, is it possible to take sat sat after watching only these lessons of the khan academy? I am a foreigner, so I ask. how else can I learn physics from scratch, only from the Internet help me please?

[@namraaah271]

@@fairyland6855 khan academy is the best place dude…check out crash course physics too…it helps

[@namraaah271]

@@fairyland6855 I’m a foreigner trying for the sats tooo…are u gonna do physics for the subject sat test

[@fairyland6855]

Beckhi what are you from🤣

[@Yeiyn343]

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! :-)

[@rumanahmedshaikh9720]

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

[@coolhidy]

+Ruman Sheikh this needs to get to khan ASAP

[@rumanahmedshaikh9720]

+HEBA MA hopefully he have got my message 

[@coolhidy]

Ruman Sheikh i just wanted to ask, are u like fully blind or are u partially blind? im sorry if i offended u, im just curious

[@rumanahmedshaikh9720]

+HEBA MA no it's ok I am partially blind If u have ever saw vision test, I cannot read even d first line and glasses.don't help

[@roseannereddy9687]

Don't worry, Rumen Shaikh, physics is all in the mind!

[@roguekash5075]

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

[@Iemons]

Its actually a stylus.

[@axoleat294]

you can use a graphic tablet or a stylus to write with a pen that displays on the screen as a mouse

[@SilveraLordz]

An easy way to remember it is is that Velocity and Vectors, who both contain directions, both begin with the letter "V"; Scalars and Speed, who do not contain a specified direction, both begin with the letter "S". Hope that clears any confusion with them. :D

[@liverpoool4lyf]

Spending my summer watching these beautiful tutorials and teaching myself physics! :)

[@saisandhamini6465]

How're you now lol?

[@user-wp9bu2rx9l]

Ur build different I swear 😂 but goo job

[@artistenoire]

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

[@jetpaq]

***** U know.... You are SO RIGHT bout that!

[@tlcangel64]

You are so right! they need 999,999,999 medals!

[@andej1238]

+Tamra Turner Bill Nye is a freemason agent of Satan NWO shill.

[@bjarke7886]

Bill Nye is pure pop science, Sal Khan is an actuel academic.

[@gabrielbusiness9878]

which Astrid Skyrim Astrid or just Astrid

[@nikiichan]

Asked the professor a question and he replied with "you should know this.. if no one answers I will leave and not teach!" and it was just stressful. I am bad at math and my confidence is at the all time low when it comes to academics. -_- Thanks SO MUCH for this video. You explain things well and its really easy to understand. Its nice having someone explain things without telling me im stupid while they're at it..

[@ghislainemaxwellofficial6083]

I’m an aspiring physicist and I cannot stress how helpful these videos are! Thank you, Khan Academy!

[@acquaura4404]

My physics teacher took 1 hour to explain this and made it more complicated than it was. Thank you.

[@Arunp47]

SIR! When I did physics in school I thought I would collapse from boredom. But you have succeeded in making me interested in it. I'd like to thank you not just for this, but for motivating me to actually informally study physics to a greater degree.

[@ElRadioDJ913]

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!! :)

[@Kaylee21m]

Ki Bushnell? Nh hhhhh we eww

[@hebkitty]

i’m telling you, i love you khan because this is SAVING me in physics. you make everything so clear, thank you sooo much!!

[@thystainless1255]

I am so thankful I haven’t done physics in 2 years and going to college in sept so I’m touching up on my physics which was already bad but now it’s so much easier with this khan academy thank you man it means a lot :)

[@azgh11]

Sir, I really think everything you do is incredibly helpful, how you educate people with your videos. Physics has been around for a long time and mathematics as well. I enjoy mathematics and physics as well.

[@new-knowledge8040]

Funny that you should be talking about both vectors and scalars. Analyzing "motion", with the intention of discovering what it truly is, I eventually ended up using both vectors and scalars, and I simultaneously stacked each of these on top of each other to represent motion of an existing object as it moves across Time-Space. Within minutes, this simple geometric representation of the motion of an object allowed me to derive all of the Special Relativity mathematical equations.

[@tabithacasper-howlter2897]

Yes! I was having so much trouble at school! Thanks! I got an A on my test because of this! I think you have taught me more in the 8 minutes that I watched in this video than the professor has in the whole semester!

[@marvencesar5561]

Thank you!!!!! 11 years later and this is still so relevant!!!

[@roshielal395]

1:55 "When we're referring to moving something or how much something has, I guess, changed its position, and I don't give you the direction, we're talking about distance! ...And I'm-- I'm as-- assuming you've heard the word *distance*." I thought this was really funny. Love your videos, Sal Khan! They're revolutionary to learning. :)

[@user-od1rm7vk9c]

this is way better than my teachers its more explained

[@user-od1rm7vk9c]

yes

[@damnthisisalongname_4764]

V for Vector and Velocity, S for Scalar and Speed, easy to remember cause they start with the same letter “Hope this helped a little bit” SIR. I came to this video having no clue about what any of this was and now I understand it PERFECTLY. Thank you, you’re such a life saver!

[@david61147]

wow this guy just taught me what my prof. took 3 hours today on in lab to teach love this guy :)

[@ILoveyouxoxo93]

Your videos are simply amazing, I WANT TO literally sit by my computer all day and learn. Thank you. I don't hate school anymore!

[@cennessiostation2410]

Im not a guy for physics but i want to do programming,i hate physics...but something about this guy kept me on this video...

[@peachglegaspi]

im reviewing for medschool and I felt the same thing when I found this video this guy kept me interested in physics..

[@jetpaq]

JunkYardFox Station its called "AWSOMENESS ness ness" lol!!

[@ChocolateMilk19]

How did society be blessed with a man like Mr. Khan! 🙏

[@jiunting3273]

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

[@jiunting3273]

Scalar quantity: magnitude/size Vector quantity: magnitude+directions

[@khojiakbarsirojiddinov6766]

Ted wow, than you!

[@luanoberholzer2943]

we liek fortnite

[@SkateWake1994]

planning on watching all of his physics videos to get ready for my college physics major! :)

[@shubhamkokane6498]

Soo cool.... this video really helped me .... now i dont need to worry about physics... khan you are the saviour of we students... thank you soo much buddy !! Countinue your noble work man.... ^_^

[@tisa3080]

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

[@genevieveluce1228]

I don’t know if it’s the repetition, or the example, but I feel like I understand the difference between velocity and speed better from this than my text book.

[@davidgeron324]

I finally understand what Vector from Despicable Me meant. "Vector, both direction and magnitude!!!". Thank you

[@Abcd-cg3vh]

You saved my life Khan, let me know what Khan i do for u?

[@ajkei1531]

Abcd 1234 I khanttttt 😂😂😂

[@laughup7055]

Donation

[@Mutthalbaaz_____Official227]

@@laughup7055 yeah, give that money to me 🤐🤐

[@gaminghats813]

this guy is much better than my this years teacher I'm in top set but get nothing but khan academy is helping more in 5 minutes than what a teacher could do in 5 lessons

[@yirehmiyahmagsayo361]

i think were blessed to have online youtube teacher in internet....

[@fultonmusic252]

I love how KZbin is capitalistic. The best teachers are rewarded by getting the most ad revenue. If we treat our teachers like superstars teaching will attract the best teachers.

[@ItzJustJohn360]

This is actually completely false. Khan Academy is a nonprofit organization and so they don't make any profit. This is why you don't see any ads on any of their videos. Khan is literally a blessing to the world of education because he is providing free accessible knowledge, and is run by donations. Please don't try and use KA to justify Capitalism lmao

[@rumanahmedshaikh9720]

When I was first expose to physics classes and came to knowhow essential it is to see what d teacher is writing I felt very bad as I couldn't see. The first class was of vectors, d very base of physics. Therefore I had to suffer for a entire year and lost interest in physics as well as my life. Then I came to know about Khan academy which brought me back to life

[@kashwikav7683]

This is so helpful!! Thank you.

[@idontknowwhattodoinlife6712]

wow, i wish i found this channel a little earlier. I never thought I'd understand math, i think this is already calculus, idk. But i never thought I'd feel at ease watching this. Wow, thank you.

[@itshannah711]

Sal, you’ve helped me so much in algebra throughout the years and now you’re helping me pass physics. Thank you so much, this video clearly explained what my teacher has failed to explain for weeks, and in so much less time!

[@strawberriesandcheese]

ayo Keith👀

[@rickyjp9086]

Ah man! Sal Khan and cpg grey speak and sound so similar. Anyone else notice this?

[@NoooThisIsNotShelby]

Oh god this is a life saver. I nearly cried in relief as I watched this, I finally have a good way to learn physics.

[@khojiakbarsirojiddinov6766]

i know it is a cliche but U and other KZbinrs who dedicate their channels to teaching the specific knowledge and insights are near and dear to my heart. What more can I ask for?

[@ebraam56]

Khan Academy is the best!!!!

[@user-hk9um9ty1m]

5:47 purrrrrrrrrr～

[@DerrickJLarson]

I wish this was around when I was taking physics; that class was so hard. I got a low C. Khan Academy is helping me now b/c I'm currently doing independent study. Thank you Sal!!!!

[@yellowcyborg4729]

Thank you for this video, it helped a lot. And an even bigger thank you for having good subtitles - it is now easier for me to revise in a loud household :)

[@ThePen077]

This was easy for me to understand, i might throw my text book away now!!! I love your suff Stan Harare Zimbabwe

[@chingas9378]

I want to make a despicable me reference but I just can’t.

[@max-mg7gk]

Yes...you can...

[@Neno-jn4sk]

You just gotted V E C T O R E D

[@michellelemos4825]

my guardian angel....tysm i neeeded basics you're lessons helps me a lot

[@dr0wndd]

This is really helpful just as a refresher for over the summer holidays. Now I can go back to school fresh and remembering stuff I learnt already :)

[@bhaveshprashantchaudhari6244]

Hey man thx a lottt!!! U cleared my doubt for my iit exam nd covered one topic.....Thx a lot

[@constructofeternity]

Same here bro.

[@Mutthalbaaz_____Official227]

@@constructofeternity 🤐🤐

[@masteragnostic5295]

@@Mutthalbaaz_____Official227 dude, Lol, 4 years ago, and I get a text. Btw, I ain't that bad in life right now, and I thought this is more like 5 years ago.

[@constructofeternity]

@@Mutthalbaaz_____Official227 The emoji meaning?

[@Mutthalbaaz_____Official227]

@@masteragnostic5295 awwe

[@Geodendronitrian]

Better than vevo and the music industry.

[@salmon-youtube]

Wut lol

[@mohamudmohamed4554]

I'm just a kid who is trying to master Chemistry, Physics, Mathematics, and Neuroscience. I found this video from a link on a site I was using. Thanks for the introduction

[@azrabanu5293]

SO much helpful! Unfortunately I've got a new physics teacher but lke he doesn't teach us prperly- actually tbh I didn't understand anything for vectors...But like now I seem to be much more confident in dealing with vectors and scalars after watching this tutorial. Many thanks frm NZ!

[@bernicetirado3685]

science just makes sense :0

[@HeWhoAvoidsTheLight]

i love the way he says magnitude...magnitooode

[@SLA-yo4is]

‎

[@themindflayer5952]

Wow, this is a very educational video! Thanks for expanding my knowledge of Physics!

[@tshirt1610]

thank you so much! It's 12 am and i'm trying to cram in notes for a quiz tomorrow. Great start to the semester D:

[@ahmedismail6846]

Which application did you use?

[@neelamkhalil4120]

I also want to know!

[@avyaya123]

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

[@SKC_Digital]

+Avyaya A I think he clicked the wrong colour but after seeing it he just said "fuck it, it's green now"

[@avyaya123]

lol

[@avyaya123]

hmm probably

[@coolhidy]

+Avyaya A its light green lol. he isnt stupid.

[@rongpencil8404]

how pathetic your mentality is!!!!!!STOP VOMITING YOUR bad thoughts,we've come here to learn something. Not to speak shit.

[@325ayaanhyder8]

school teachers only explain .but the this academy is mindblowing.awesome.all my doubts get solved in seconds.thank u very much.i love this academy.keep it up.

[@theonetrueac]

You helped me get through my PreCal class and I foresee you helping get me through my Physics class, so thanks for that. :-)

[@Superpax]

🤔 Mhmm yes vectors and scalars!

[@BJ-no2oe]

Superpax Mhmm yes a comment and reply!

[@zoravursingh5617]

2:31 dangit lost focus

[@rbwt2]

This channel is a life saver. My professor is cool and all, and I'm sure he knows what he's talking about, but he's not very good at explaining things, which leaves most of our class in constant confusion. At least I know I can come here to help fill in the blanks. :)

[@sunithabasava3705]

Thank you so much! I really was confused with this topic and I am writing a test tomorrow ,now I understand. Thank you

[@verydeadchannel.4824]

Stuck? These things might help. Get it?

[@nazch7179]

no

[@jamesdunn2437]

the way he repeats himself drives me crazy.

[@marekartist8441]

yes... thats true... I can stand it for a few videos, but I cannot bear it for the entire playlist!

[@Taqsunis]

haha true but i think he does it to clarify the point or just to make sure he understands wt he is saying

[@sivad1025]

I don't like it either, but he gets it ingrained in your head so in a way I really appreciate it

[@muunshine]

First comment that's not inspirational cringe, nor a bad joke.

[@xyfrq6631]

He either does this as a habit or he wants you to remember what he's talking about by repeating.

[@joshuam8863]

excellent vid as usual. this is something that should be the first thing out of every teachers mouth on the first day of PHY 101. seriously so important to understand this.

[@Sinshana]

Thank you for your helping me with Math last summer, Sal. This year our Math is even harder, but our teacher is just as amazing, so I won't be needing your help there anymore. But now... Physics. THIS teacher is the WORST teacher I've ever had the misfortune of meeting. So I'm here now. Thanks again, Sal.

[@SERcerolimites]

Khan Academy (Salman Khan) The world will always be grateful with you. Me, too. Thank you from Inca land (Peru). :)

[@akbarbukhari]

Is physics hard, I have to take it next semester and feel a bit nervous . I have taken college algerbra and chemistry so far but never physics

[@danielmaas5507]

Physics is extremely challenging, yet I love it! I highly encourage you to take it.

[@jetpaq]

Jay Khan something is only difficult to the degree that you are interested in it. The proportions change as you hate a subject. If you love nature and are curious, your going to love physics..and therefore it wont be difficult. Curiosity is painless to the passionate.

[@danielmaas5507]

I love physics but I find it extremely challenging at times.

[@zheliu4591]

Jay Khan i suggest you take calculus 1 and calculus 2 before take on physics, then you will feel physics is slightly hard but not very challenging to the point you struggle

[@KamranYounis1]

+Daniel Maas physics = life basically, physics is by far the best subject ever, before maths. it's not that hard if ur interested in it, or u know what ur doing!!!!

[@kukuyu4331]

I've been so scared of taking physics class next year, but I can see that this video will save me from the fear of physics.😭

[@jascroft5]

Wow, thanks for that extremely helpful and enlightening comment. I wish there were more people like you around to encourage those who are aspiring to help others and also those who wish to learn more. Oh wait.

[@esthernansubuga4688]

When you're from the UK and metres is spelt "meters" in the video😅

[@krkaasyap8132]

or commonwealth

[@stevelittle9289]

"What's your vector Victor"

[@moeedsmart6171]

TVS vector style loo koota star

[@Strawberry-cu6wr]

This channel drains out much of my frustration and helps me do good in studies :) thank you so much for your brilliant explanaition

[@santiagogomezpaz7631]

what is the name of the application you use as the board and to record the screen and voice? thank you so much for the video! it serve me to understand somethings about electronics

[@flxwzarmy8945]

Thumbs up if that helped u

[@flxwzarmy8945]

Down if it didnt

[@dbuc4671]

im from 2020, worst year ever, for y'all random future people scrolling by. Anyone else 2020?? 2021?? 2022, 2023, or how bout 2024?? 2025, 2026, 2027, 2028, 2029, 2030?? welp let this be a virtual time capsule. 11:40:51 AM Pacific Standard Time Aug 28th 2020 West Vancouver British Columbia Canada.

[@toyosi.s.4182]

😂😂😂😂here 2020

[@nijhum1072]

2021

[@EdImaginesHeCanFly]

this guy would be like the best physics teacher ever i havent understood this for like 2 weeks and ive learnt so much in like 10 minutes

[@dilruba5169]

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

[@roundhouse6595]

I have just started my sports science course at Uni and find these videos very useful. Thanks

[@m7mmd244]

الله يجزاك كل خير ويهديك للاسلام كانك منتب مسلم :)

[@bmcorrier]

Never taken a bit of physics and I understood that perfectly. Excellent job.

[@dinislamMilon]

thanks mate you made me clear up all my problems thank you

[@laxmanmahto5719]

Really he explained the quantyties in a clear manner

[@krish_thefish8980]

my year 7 teacher was waffling about this and at the end of class I searched up so many vids, but this was the best by far

[@theazndonut1]

thank you so much for this video, this help clear things up a lot

[@christianraams430]

you are the best educational instructer I have ever seen on KZbin and you are much more clear than my teachers why can't they be that clear too I would be getting A+ all the time if my teachers were this clear