Unit Vector Notation

[Kricardose]

I am very happy to see the vidoe Expressing a vector as the scaled sum of unit vectors after you give this

[bebeheuy]

I Love The Video Expressing a vector as the scaled sum of unit vectors It Can Increase My Knowledge

[Mjhond]

Steady I Really Like This Video Expressing a vector as the scaled sum of unit vectors

[zuser]

Nice to finally know what Vector is, thanks Mate! :D

[delvecchi088]

sweatness i got an A in calc 3 but never really new what the i j and k were i was just like O u just put them there lol but now i knowwwww :)

[DrLasker1]

thank you sal! I wish you could teach every one of my classes!!

[virginialikesyou]

I love you Khan... you keep me from being confused one semester after another.

[ticocr16]

Sal, ur the best

[elninogauje]

khan rocksssss!!!!!!!!!!!!!!!!!!!1

[recoil33]

Hate when you click on the wrong video, and watch it anyways because Khan just makes every topic so interesting.

[lpbug]

1....0.... oh what am i talking about i must have been writing in arabic. lol that made my day XD

[321boileranimal]

He makes this more clear then a crystal Pepsi.

[indre64]

thank you this is a really good instruction for us to know more about vector.

i like the way he taught.

[generalhess69able]

you're a boss.

[lawrencewong100]

thanks! this will help my tomorrow quiz! xD

[caladbolge]

sal! you should do examples of river crossing, you are amazing at physics.

[C4CJW]

How do you find the magnitude of the vector?

[UberCuba]

@C4CJW

its just the length, so the magnitude of a velocity is just its speed.

[C4CJW]

awesome, thanks

[lawrencewong100]

well.. hard question

[MrAlexhusa]

You r awesome man! Thank you so much!

[Johnjpcoc]

U just awesome :D

I learned a lotttttt.

I love phy now .

[ToastFroEva]

Thank you so much.

But I have a question, what if a problem doesn't give you the degrees of an angle for a vector.

If it makes my question any clearer, here's the problem:

If x = 2.00 N S of W and y = 3.00 N, 10 degrees N of W then find x plus y

[rcrr13]

@ToastFroEva hey ! i dont know if u solve this problem but when they say "2N south of west" that means that u i'll take exactly 45 degrees.. as an angle..

[navyman4]

Dude, this really helped me.  I went through Electrical Engineering at UT Austin and didn't know what unit vectors were for. THANKS!

[mild0sexy]

can anyone explain to me why V=Vx+Vy? I'm confused cuz I thought V should be the square root of Vx squared plus Vy Squared according to pythagorean rules.. Thanx :)

[amanda112358]

V=Vx+Vy where V, Vx, and Vy are vectors. True. This is because of the rules for vector addition. |v|=sqrt ( |Vx|^2 + |Vy|^2) where |v|, |Vx| and |Vy| are distances, or the lengths of the vectors. This is because of pythagorean theorm.

[bigmon888]

I thought that when you factor vectors, victor, you create a new vector; resulting in a three dimensional figure.

[laloksdm]

because its V is for Vectors its the distance from the starting point to the end but with coordinates. Its different from the Pythagorean theorem

[01mohammed]

cud u plz upload a video related to the topic unit vector in cartesian coordinate system

[M0H51NHU5541N]

afernoon??:S:S

its morning :L:L

[disneypassholder]

I echo everyone's sentiments. You are very clear. Thank you. I will give you your 99 cents when I'm not on my work computer... well worth it.

[Zeuts85]

You are awesome. Thanks a bunch for your very helpful videos. I wish my physics teacher could explain things half as well as you can--no fault of his though, people have different talents. Anyway, thanks!

[innuendostefan]

Oh man, thank you so much, extremely useful, you are a skilled teacher! Thank you again.

[Ba3dadBoy]

2:30 lol. Mate English is the one thats backwards. Haha thanks for the video :) Very useful

[KherlenBorjigon]

Thank u so much, u are doing a wonderful job. I'm taking physics 2 and cal2. I never liked unit vectors, 'cuz they would confuse me more. But now I know why we have those little thingies, thanks to u

[saronghezai]

Thank you sooooooooo much.

[CannibalisticFun]

utube policy.... try uploading a video bigger than 10 minutes...and u'll understand..

[rick7917]

Thank you so much.

[basoon]

Great Video, Really useful for my Maths Alevel here in england, thanks!