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

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

10 июн 2011

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Комментарии : 943

@annelegaspi3961 6 лет назад

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 9 лет назад

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

@GeekZonelive 9 лет назад

amber M chk out my vectorr videos

@bhanuchakraborti264 9 лет назад

Geek Zone

@GeekZonelive 9 лет назад

@LearnMathsFree 8 лет назад

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

@firmestree6498 8 лет назад

besides grammar

@henrikhove7102 7 лет назад

*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 7 лет назад

@mariammamamachen3515 3 года назад

Wasn't it blue the 1st time though 🤔

@thedogdogification 3 года назад

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

@shannenlibres2365 3 года назад

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

@jacobmark1099 2 года назад

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

@Aquarithyst 9 лет назад

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

@arondabetinarysadelt.2790 9 лет назад

No that's totally true..

@jaxbenson3422 9 лет назад

100% accurate

@vaibhavpatil2611 9 лет назад

Tianna Woo that's the fact

@hiaQadeer 9 лет назад

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 9 лет назад

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.

@Dreitiquiz 7 лет назад

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

@hanadi5470 6 лет назад

Drei Detiquiz same

@nicolalastella8107 2 года назад

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

@SalahudeenDaudi 7 месяцев назад

bro he is using a stylus you numpty

@sludgerat 4 года назад

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

@shannenlibres2365 3 года назад

Is this subject in the SAT?

@incipimitusiterum4261 4 месяца назад

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

@incipimitusiterum4261 4 месяца назад

@@shannenlibres2365 god no. absolutely not

@cee9945 4 года назад

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

@corey5454 9 лет назад

This channel is literally life changing.

@Yeiyn343 9 лет назад

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! :-)

@RucrazyRogue 10 лет назад

Goodbye texbooks, hello Khan Academy!

@insideblankoutside 10 лет назад

You said it

@shahriartanvir874 9 лет назад

mee too...

@sanjeetsingh4354 6 лет назад

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

@chandler1473 6 лет назад

Yattin Manhas it's also an interactive application!

@tabarakaljemelawy9226 5 лет назад

THATS FUNNY

@danielmartens7639 7 лет назад

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

@gobbleyourface1440 7 лет назад

lol

@jacobchristie5818 6 лет назад

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.

@SilveraLordz 13 лет назад

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

@Arunp47 11 лет назад

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.

@nikiichan 12 лет назад

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..

@hebkitty 10 месяцев назад

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

@damnthisisalongname_4764 2 месяца назад

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!

@acquaura4404 7 лет назад

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

@ghislainemaxwellofficial6083 5 лет назад

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

@Sinshana 13 лет назад

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.

@genevieveluce1228 2 года назад

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.

@liverpoool4lyf 12 лет назад

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

@saisandhamini6465 2 года назад

How're you now lol?

@user-wp9bu2rx9l Год назад

Ur build different I swear 😂 but goo job

@thystainless1255 4 года назад

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 :)

@gaminghats813 7 лет назад

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

@kashwikav7683 2 года назад

This is so helpful!! Thank you.

@rumanahmedshaikh9720 8 лет назад

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 8 лет назад

+Ruman Sheikh this needs to get to khan ASAP

@rumanahmedshaikh9720 8 лет назад

+HEBA MA hopefully he have got my message

@coolhidy 8 лет назад

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 8 лет назад

+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 6 лет назад

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

@tabithacasper-howlter2897 8 лет назад

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!

@yirehmiyahmagsayo361 4 года назад

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

@new-knowledge8040 8 лет назад

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.

@marvencesar5561 Год назад

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

@andreafernandez445 3 года назад

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

@nibbinoodle05 3 года назад

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

@fairyland6855 3 года назад

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 3 года назад

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

@namraaah271 3 года назад

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

@fairyland6855 3 года назад

Beckhi what are you from🤣

@tisa3080 3 года назад

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

@roshielal395 9 лет назад

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. :)

@artistenoire 9 лет назад

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

@jetpaq 9 лет назад

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

@tlcangel64 8 лет назад

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

@andej1238 8 лет назад

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

@bjarke7886 6 лет назад

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

@gabrielbusiness9878 6 лет назад

which Astrid Skyrim Astrid or just Astrid

@azgh11 8 лет назад

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.

@ILoveyouxoxo93 12 лет назад

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!

@ElRadioDJ913 10 лет назад

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 9 лет назад

Ki Bushnell? Nh hhhhh we eww

@404eesa 2 года назад

Khan Academy > School

@SkateWake1994 11 лет назад

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

@kukuyu4331 4 месяца назад

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.😭

@roguekash5075 5 лет назад

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

@Iemons 5 лет назад

Its actually a stylus.

@axoleat294 3 года назад

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

@ChocolateMilk19 4 года назад

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

@shubhamkokane6498 9 лет назад

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.... ^_^

@idontknowwhattodoinlife6712 3 года назад

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.

@david61147 10 лет назад

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

@davidgeron324 4 года назад

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

@dilruba5169 7 лет назад

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

@DerrickJLarson 12 лет назад

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!!!!

@NoooThisIsNotShelby 10 лет назад

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.

@rumanahmedshaikh9720 8 лет назад

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

@itshannah711 3 года назад

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 3 года назад

ayo Keith👀

@DellaRonga 24 дня назад

I am not fluent in English, but this video explains it better than the learning I received in my native language, thankyou sm

@khojiakbarsirojiddinov6766 5 лет назад

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

@cennessiostation2410 9 лет назад

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 9 лет назад

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

@jetpaq 9 лет назад

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

@user-od1rm7vk9c 8 лет назад

this is way better than my teachers its more explained

@dillantaylor6680 7 лет назад

King Panda

@user-od1rm7vk9c 7 лет назад

yes

@DAZBOYEEEEE 12 лет назад

the order that they appear in the playlist is they start at the basics, then get increasingly difficult as you go. It's a good idea to try to watch them in order, but once you get the basics it isn't required

@yellowcyborg4729 8 лет назад

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 :)

@Abcd-cg3vh 9 лет назад

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

@ajkei1531 5 лет назад

Abcd 1234 I khanttttt 😂😂😂

@laughup7055 4 года назад

Donation

@Morningstarintheroses 4 года назад

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

@jiunting3273 6 лет назад

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

@jiunting3273 6 лет назад

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

@khojiakbarsirojiddinov6766 5 лет назад

Ted wow, than you!

@luanoberholzer2943 5 лет назад

we liek fortnite

@tshirt1610 10 лет назад

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:

@joshuam8863 7 лет назад

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.

@fultonmusic252 4 года назад

I love how RU-vid 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 4 года назад

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

@ebraam56 10 лет назад

Khan Academy is the best!!!!

@dr0wndd 12 лет назад

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 :)

@themindflayer5952 7 лет назад

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

@user-hk9um9ty1m 5 лет назад

5:47 purrrrrrrrrr～

@ThePen077 8 лет назад

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

@sunithabasava3705 3 года назад

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

@325ayaanhyder8 8 лет назад

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.

@rickyjp9086 9 лет назад

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

@bhaveshprashantchaudhari6244 9 лет назад

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

@constructofeternity 9 лет назад

Same here bro.

@Morningstarintheroses 4 года назад

@@constructofeternity 🤐🤐

@masteragnostic5295 4 года назад

@@Morningstarintheroses 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 4 года назад

@@Morningstarintheroses The emoji meaning?

@Morningstarintheroses 4 года назад

@@masteragnostic5295 awwe

@azrabanu5293 7 лет назад

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!

@theonetrueac 12 лет назад

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

@bernicetirado3685 10 лет назад

science just makes sense :0

@HeWhoAvoidsTheLight 12 лет назад

i love the way he says magnitude...magnitooode

@SLA-yo4is 3 года назад

‎

@jascroft5 11 лет назад

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.

@F0MCtrader 8 лет назад

I have watched many video tutors but tbh I do not think I have seen anyone who explains stuff as good as you do. you always answer why stuff are the way it is being presented, during your explanation. last year I passed linear algebra from just watching your videos. But now I wish there was more of those videos for Mechanics of materials.

@Geodendronitrian 8 лет назад

Better than vevo and the music industry.

@salmon-youtube 8 лет назад

Wut lol

@chingas9378 4 года назад

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

@max-mg7gk 4 года назад

Yes...you can...

@Neno-jn4sk 3 года назад

You just gotted V E C T O R E D

@roundhouse6595 8 лет назад

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

@ndleinahaystack 9 лет назад

Sal is the man! I'm learning more now than I ever did in the rotten Newark nj scam... I mean school system. Keep up the good work Sal.

@ahmedismail6846 7 лет назад

Which application did you use?

@neelamkhalil4120 7 лет назад

I also want to know!

@zoravursingh5617 10 лет назад

2:31 dangit lost focus

@michellelemos4825 7 лет назад

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

@EdImaginesHeCanFly 10 лет назад

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

@avyaya123 8 лет назад

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

@SKC_Digital 8 лет назад

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

@avyaya123 8 лет назад

lol

@avyaya123 8 лет назад

hmm probably

@coolhidy 8 лет назад

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

@rongpencil8404 8 лет назад

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

@Superpax 7 лет назад

🤔 Mhmm yes vectors and scalars!

@BJ-no2oe 7 лет назад

Superpax Mhmm yes a comment and reply!

@Strawberry-cu6wr 9 лет назад

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

@rbwt2 10 лет назад

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. :)

@verydeadchannel.4824 8 лет назад

Stuck? These things might help. Get it?

@nazch7179 7 лет назад

@SERcerolimites 9 лет назад

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

@bmcorrier 12 лет назад

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

@krish_thefish8980 3 года назад

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

@joooce_ 4 года назад

Night before physics test anybody?

@akbarbukhari 9 лет назад

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 9 лет назад

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

@jetpaq 9 лет назад

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 9 лет назад

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

@zheliu4591 9 лет назад

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 8 лет назад

+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!!!!

@daniih9780 6 лет назад

thank you so much Sal this helped me a lot

@mohamudmohamed4554 10 лет назад

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