Vectors and 2D Motion: Crash Course Physics #4

[@crashcourse]

We made quiz questions to help you review the content in this episode! Find them on the free Crash Course App! Download it here for Apple Devices: apple.co/3d4eyZo Download it here for Android Devices: bit.ly/3TW06aP

[@EugeneKhutoryansky]

The most important question is: Will that rubix cube on the desk be solved before the end of this series?

[@adammehdi9205]

+Physics Videos by Eugene Khutoryansky I love your videos!

[@crashcourse]

+Physics Videos by Eugene Khutoryansky prrrrrrrrrrobably not. But, we can all hope, right? -Nick J.

[@steflinden4231]

+CrashCourse get a professional

[@modap3000]

+Physics Videos by Eugene Khutoryansky i'll teach her

[@888SpinR]

+Physics Videos by Eugene Khutoryansky I'll be honest, I don't care if it gets solved, I just want it to have maximum area touching the table!

[@aruggles]

I love crash course physics, but you need to show your work. When you give an answer to an equation, please do an animation that shows how you cam to that number. I already know the physics and the math but, I know a younger me would have needed that middle step. Still love this channel and you're doing a great job!

[@ram010992]

+Adam Ruggles Yes, yes, yes!! I was a math minor in college and I'm still lost without showing all the work the whole way. I feel like moving the numbers and letter with animation is cool, but I need all my steps listed to show how those changes are happening.

[@julioequinones]

Those are physicists for you. my physics professor was habitual about not showing work and putting summations all over the whiteboard. it looked like an art class. I remember one day before taking physics passing by his class and the door was open I thought to myself I would hate to be in that guy's math class. Then I realized it was the same guy the next semester when I took physics. I look back at it like a rite of passage now lol.

[@cyberxxxcyberxxx9464]

Since you know physics and math I need a help with my homework 😂 If a ball is thrown upwards with an initial velocity of 120 ft per second how long does it take for it to go 216 ft And is it possible for the ball to hit 900 ft

[@atharvc9543]

They especially need to breath

[@nourghazal296]

I think that someone studying kinematics would not need the middle steps.

[@RuneWarhuus]

Will CrashCourse videos ever feature breathing?

[@damnage97]

crash course biology

[@RuneWarhuus]

I meant - will the presenters of CrashCourse ever be allowed to breath? My head hurts after about 1 minute into CrashCourse videos because of the way it is cut. All natural language pauses are cut out to make an ADHD friendly format. Its like being verbally bombarded.

[@damnage97]

+Rune Warhuus I know.. it was a joke

[@RuneWarhuus]

+damnage97 :-p

[@coena9377]

Pause the video or play it at a lower speed.

[@britterthecritter4531]

Watching this at 12:15 am, I have a physics midterm in 7 hours pray for me

[@danherrera8846]

5 Secønds øf Fall Øut Chemical at the Discø! Same here...

[@b0unce805]

a year later, an I'm about to take my physics midterm tomorrow... 12 hrs to go

[@Zanewms]

@@b0unce805 9 months later, I have an exam in 12 hrs

[@celeryystick]

@@Zanewms 3 weeks later, I have an exam in 12 min

[@kianagouveia4256]

@@celeryystick 3 months later, I'm currently taking my exam

[@deepwoodsengineering3763]

I have to say, Hank's courses are difficult to compete with, but Shini does an outstanding job. You did a good job in the Engineering course as well.

[@ThatSilverDude]

just got done with my first week of college physics and we learned about vectors. Lets just say i was completely lost until i watched this video, thank you so much for the crash course.

[@ricearoni06]

I'm keeping up with these just for fun. I took Physics 19 years ago in high school! It's fun to see that while the world has changed, the math has not. It's good to know that I'll be able to help my high school age kids on their Physics homework too.

[@freevpnproxy1669]

PHYSICS IS EASY WHEN TEACHER IS PERFECT.

[@thispandaispurple]

Crash course physics. The only series I can watch 3 time in a row and still scratch my head about.

[@BlueyMcPhluey]

I hope that there is another mathematic crash course series that can work as a prequel to this one...

[@Donthefirst]

+josh mcgee yes ;D

[@difajabug]

+josh mcgee That's maths you learn at the beginning of secondary school normaly.

[@abs_nobody]

+halveiz you need all of calculus to truly understand physics. Calculus' sole purpose was to do physics you know

[@fatoundiaye6338]

me: this is 2D, let me go find something 3D Her: Harry Styles me: alright, I guess I need to review 2D (:

[@sheepwshotguns42]

sohcahtoa saved my life in highschool.

[@toffeesky6227]

Truth.

[@aggbak1]

yup

[@petresilegov2581]

Ron Walsh ikr so useful

[@waterfallsdontsaymeow2917]

Katherine Pierce Bad idea. Math and physics are married.

[@waterfallsdontsaymeow2917]

Katherine Pierce SOH : Sine = opposite/ hypotenuse, CAH: Cosine = adjacent/ hypotenuse TOA: Tan = opposite/ adjacent. opposite side is the side opposite the angle we're measuring. adjacent side is the one the angle is sitting on hypotenuse is the side opposite the 90 degree angle

[@charissalee4486]

when you need more than one direction you turn to vectors. best advice ever

[@crashcourse]

27th!!!!

[@TheScienceVerse]

hi

[@jaedenrotondo3373]

😂that's amazing

[@josephdonkin3858]

Good job!

[@hendrickdias8366]

Will this course go all the way till quantum theory?

[@jpchevron]

+CrashCourse There's a mistake with baseball example. When you throw the one ball horizontally it takes longer to hit the ground as you've now increased the distance the ball has to travel to hit the ground. As both balls are only falling due to gravity it would be impossible for them to both hit the ground at the same time.

[@omgisthat_trxcie]

She had me at Harry Styles. 0:11 On a more serious note tho, crash course is amazing, thanks so much for what you do.

[@nataliemccarthy9140]

Vector! Committing crimes with both direction and magnitude!!!

[@theguywholovespie2118]

+Natalie McCarthy I FINALLY GET IT!!!!!!!!!!!!!!!!

[@jioarabit986]

OH YEAHHH

[@brainiacmaniac9]

Female engineers (and engineering students 😉) out here representing in Crash Course Physics!! Dr. Shini's passion is so contagious!

[@Rosecleer]

The amount of sheer delight I feel having this explained to me in a way I understand is unreal.

[@SoshiroGames]

Im a 1st year programmer, this really helped me understand how vectors works on a 2d platform. thanks!

[@heaven3706]

you are amazing!! I understand it’s difficult to go over an extensive amount of information in such a short amount of time. To everyone out there who is confused: I understand you too!! If you want to review the math aspects of the video, I suggest watching some of NancyPi’s videos, since math is her forte. Otherwise, keep pausing these CrashCourse videos and internalizing the info. I know we can do this!! :)♥️

[@Hannah-ef7gi]

Just tryna study and she brings up harry styles 😭♥️

[@Tundra-ec3ii]

This series is going to help me soo much in a few years

[@arturmizuno]

How old are you? 12?

[@Tundra-ec3ii]

Artur Mizuno 14

[@arturmizuno]

Tundra1232 then, yes it will, a lot. NERDPOWER

[@omarsharief8101]

Ummm... I am 12 🤓

[@Prim3Pursuits]

+Tundra1232 Haha I like how you think, it's always great to stay ahead of the game.

[@brenohenrique6666]

I'm loving this series so weird to get nostalgic about things like vectors or integrals. good for reviewing things too

[@JeremyPezmanTaylor]

I'm studying for the MCAT, and my Physics are so rusty this series is so helpful.

[@daniellassander]

I love this channel and the presenter is awesome! I really hope i get to see more from her in the future!

[@jecsouza]

I've watched this video just to practice my English and I ended up took an exelent Phisics class. Tks!!!

[@DanielDogeanu]

I'm sorry, I can't concentrate on the girl with all this beautiful physics...

[@abs_nobody]

+Daniel Dogeanu good, you'll need that kind of distraction. That's the right kind of distraction

[@cheshire__kat]

LMAOO

[@dinonid1234]

Go Triangles! Vihart is proud!

[@walavouchey]

XD

[@ImranZakhaev9]

Candy corn triangles made of candy corn triangles made of candy corn triangles made of candy corn colonels

[@TheMasonX23]

+Demellovlogs And vectors! As a game programmer (especially graphics stuff), I use both constantly :)

[@quprabeats4476]

dab

[@johnochube4042]

I have a test on this tomorrow :D

[@jedigecko06]

Can't unsee the 'Big Eyed Hanklerfish' on the left.

[@najarvis]

hoping that there are a lot more of these before the AP physics C test!

[@crashcourse]

+Nick Jarvis Every Thursday (barring some holidays) for the next year :) -Nick J.

[@najarvis]

+CrashCourse Well I guess that means 2 more episodes before I have to take it... I probably should start studying on my own. Still, this sure will help people for next year's test!

[@khanman888]

+Nick Jarvis this stuff wont help you too much man. This series is pretty bad at explaining physics. You might get the gist of it, which is the point, it's a crash course, but you probably wont be able to do anything complicated with this.

[@abs_nobody]

+Nick Jarvis we're barely into AP Physics AB, it's gonna be a long way bud

[@SamanthaMDavid]

+Glenn Edwards thanks for the tip it looks like a useful channel. :)

[@rushikaasureshkumar]

ONE DIRECTION REFERENCE.....OMG..I LOVE THIS ALREADY!!

[@TheGoldenBoo]

I'm really digging how interactive Crash Course is getting with the comments in this series.

[@justintaylor4614]

simple topic made complex

[@TheGoldenBoo]

Justin Taylor I fail to see the relation between what I said and what you responded to what I just said.

[@BlackCat-zp6qb]

+Fallenshadowv3 I agree with you i don't get his point either XD

[@yanthos]

I list crash course as my tutor source on my college questionnaire. This has helped a ton thank you.

[@juliahormayer7255]

This video is amazing!! I'm currently studying Physics at university (in Scotland, as a third choice for a year, so just for fun) despite having a pretty weak Physics background (I even took Physics for my final exam but we just never touched on all of these topics in school for some reason), so I often have troubles solving problems because no one has ever taught me the basics and this video is literally everything I missed out on in school 😂😂

[@manvichauhan3020]

That moment when you're watching this in panic mode before a test

[@sanatsingh8955]

This program is done in a such a way that even a 13yr(me) old can understand it. It fills my curiosity and I always learn some thing new.

[@maryco7140]

I suggest: What about adding a little quiz at the end of the video or a quiz file at the description to sum up and recap the lesson tackled in the video, which will make the path to mastery a whole lot easier by adding a good amount of application?

[@frzferdinand72]

When I return to college, you're gonna be the real MVPs.

[@CorvaireWind]

Physics will be the foundation of future object oriented maths utilizing augmented reality ;O)-

[@spicychickensandwichs]

Loving the way she describes vector math geometry class information. It just interesting to see how much more serious people were in the old day when resources was scarce. Yeah.

[@photophone5574]

When you have magnitude and direction. You just got vectored!

[@mechailreydon3784]

2 hours worth of lectures in 10 minutes... not bad

[@ryank.1290]

I can't help admiring Dr. Somara. She is so adorable! I wonder why our school teacher couldn't explain it all that clear.

[@liwendiamond9223]

+AsteroidYasha JJA Well the school teacher has to do it live in front of a bunch of hormone crazed teenagers. Here she gets to read a pre made course on a teleprompter, with a small crew of professionals helping her out with the magic power of editing. You can also pause the video and repeat parts as many times as you need to understand. Also the audience, that is you, is watching the video voluntarily, instead of being forced into a classroom for several hours a day. You are in the comfort and safety of your home, the bullies aren't there to break your fingers and that one hot girl or boy you have a crush on isn't constantly distracting you from learning things being simply existing in your vicinity. Want I'm saying is : School is a really... REALLY sub-optimal environment if you want to be learning things. But since we can't all afford private teachers and stuff like Crash Course isn't sufficient to really master a subject, we still have to attend it and get that annoyingly underwhelming piece of paper at the end that says "This person managed to finish school successfully and therefore isn't entirely worthless so please consider hiring him."

[@purplepigfarm5391]

I subbed before the video even got to 1 minute. And that's amazing to say the least. I'm very particular about who I sub to and making sure they make good content. I look on the sidebar and it is loaded with other videos from the same channel on many other things I would like to quickly learn. In 59 seconds I knew I would learn so much from just this 10 min video; way more than the confusing 30 min lecture I just watched from a college professor.

[@wesleycurrier13]

This is gonna be the savior of my AP Physics 1 exam grade

[@bellajaid]

OMFG, I've been desperately thinking y'all need a math sequence and it didn't even dawn on me to look up my subjects in your Physics sequence! Geeze, I love Crash Course!

[@AmeekBindra]

thanks so much!! I finally get vectors after like six months!!

[@JustLoco100]

The only direction the vectors have sent me to is DEPRESSION ✨ Lol but thank u sm for this, easy to understand and made me actually learn the damn vectors.

[@mmkthemusician5254]

Even though we being quarantined thanks to this virus, crash course is always their to hepl us learn. CrashCourse physics is definitely one of my favorite crash courses

[@VSPG_SIVANI]

Wooooah Physics! I lost control on myself for a sec when I saw that opener at 0:38 😂

[@kenny1jon2B]

I may have to watch this multiple times and take some notes haha

[@Tselel]

"It has a lot to do with Harry Styles." Being two dimensional? Had to take the swing when you lob them up like that.

[@quazary9172]

Omg, I still don't get it. Does it have to deal with one direction?

[@sushmitasingh5825]

@@quazary9172 2 ways1, DIRECTIONS 2. he juggles

[@EmuOtori414]

Crash Course Is The Best!!😀

[@andrewkiminhwan]

i dont know if its the english accent, or what but she makes physics mesmerizing. Sri lanka is a beautiful place! Physics ftw!

[@puddycad27]

I honestly learnt so much from these videos than all my hours in lecture combined!! Thank you !!

[@calseed]

I believe every science learner should watch this video before tackling projectile motion/ Kinematics .. This was really helpful , thanks !

[@olagressloes]

I am very grateful for the work you are doing! Your physics videos have helped me out in my AP Physics class a whole lot! Thank you, and keep up the good work!

[@MariaAraujo-bj5sl]

SO HELPFUL for big concepts on the MCAT! thank you so much!!!!

[@TrinJeto]

I FINALLY UNDERSTAND HOW TO DERIVE THOSE TWO KINEMATICS EQUATIONS! THANK YOU BASED CRASHCOURSE!

[@butter1619]

it's so great yall do this and give it out for free. I'm so bad at physics and this helps a lot and is super easy to follow.

[@M_Chen333]

4:06 What about 30-60-90 triangles? With hypotenuse 2x, 30-leg x, and 60-leg x-root-3?

[@theTABmail]

Who else noticed harold cycling away on the table at 0:02?

[@thatomofolo452]

Thanks for helping me with my homework👍👍😁

[@therapist2852]

ah okay thanks a lot my teacher was going through this in class but i didnt understand, so i failed my exam... then i found this channel lol

[@frankschneider6156]

+CrashCourse Stupid question: Just wondering, why don't you use the matrix notation for vectors ? Yes, it's mostly somewhat of a mater of personal taste, but a lot quicker to write and you don't get into trouble when moving to n-dimensions, with n > 3.

[@Narokkurai]

Probably too advanced for this course, although I think matrix notation ought to be taught much earlier. I was a straight-A math and physics student in high school, but my first engineering course at University was brutally difficult, because suddenly EVERYTHING was matrices, and my classes barely ever touched on them. Really think the US education system completely drops the ball with math education. Things like Trigonometry and Calculus should be taught much much earlier, so students can build a stronger foundation.

[@frankschneider6156]

Narokkurai Here Trigonometry and Calculus are part of the mandatory curriculum in high school, but i can assure you that the problem of inadequate sub-par maths training in schools is a global issue (well at least in Europe it is too). So it's not just the US. And so the first semester seems to be the same everywhere when high school students are suddenly confronted with university maths. (Just read an article today about students massively complaining because only 12 of 188 freshmen passed the first math test in engineering).

[@trollerjakthetrollinggod-e7761]

There's litterally nothing I could find online about vectors, but this makes it pretty simple.

[@theotherVLF]

Nothing can ever be simple. That's what makes it fun.

[@cec6607]

These are my uni classes resumed in a video right here.

[@EriAirlangga]

Finally! A course that is not in Hindi! I love your British accent! Thanks!

[@feynstein1004]

Yay vectors. I remember studying them in my physics class almost 10 years ago. Wow, I'm old.

[@theheadone]

These were always my favorite problems to solve back in physics :)

[@McRuffin]

Vector! The evil supervillan from despicable me

[@collinkhan4163]

And in marvel comics.

[@飛龍-z9u]

crash course, you blow my mind

[@WIImotionmasher]

I loved doing Linear Algrebra (just finished the term I did it in, at University). I loved it because it was super easy, and made snese. Especially compared to Calculus.................. You guys should do derivatives!

[@lucasm4299]

They already did.

[@WIImotionmasher]

DAMNIT

[@sorrowsfromeden]

This saved my Physics mark thank you so much 😃

[@willbondurant2276]

this video has not been incorporated into the physics playlist

[@crashcourse]

+Exceptionally Average FIXED!

[@willbondurant2276]

+CrashCourse YAAAAAAAAAAAAAAAAAY!

[@kingditto5149]

+CrashCourse Eyyyyy good work! 👍

[@marshapple]

You made physics look beautiful to me. never found it interesting until now

[@WiseWik]

Shini, you are amazing! :*

[@insppiroreal]

Nice video. It really helps.

[@ayad6564]

thanks a lot......i have a test tomorrow, crash course saved my day!!!

[@agsmiley357]

I wonder if the course will touch a little bit of the quantum realm.That would be awesome!

[@jeronimoolivavelez1299]

Excellent Explanation! Thank you very much!!

[@TheFireflyGrave]

This series is really starting to hit its stride.

[@alexmoore9663]

This crash course has started covering the start of the SQA Higher course (Scotland) which I done last year, pity I couldn't have waited a year for this

[@jbmjbm2145]

your picture is that of a racist

[@wibblemu9]

+jbmjbm21 how is Che Guevara a racist?

[@PabAng]

+wibblemu9 Che was racist, xenophobic, homophobic, a bit of a psychopath since he enjoyed to torture sometimes. Just because he was par of something very good doesn't make him a good person.

[@geraldellis1177]

TE AMO DR.shini!!!!!!!!!!!!!!!!!!!!!!!!!!11111

[@WeAreGRID]

so far this episode has been the easiest, because it basically just showed that you list the components of the direction separately. i was sure they were going to get into slope this episode too lol

[@david0aloha]

I love this whole channel, but these are really great. Please do more physics videos!

[@TheTariqibnziyad]

this does refresh my memory a lot!!!

[@nachannachle2706]

This took me two viewings to "grasp" the core concept. Dr Shini's Top->Bottom approach definitely works well for me. So, a vector's components are figures used to describe the vector in 2D (on a graph) by using principles of trigonometry, right? The vector's magnitude describes a displacement in a certain direction. Essentially, the vector describes a "dynamic" state = motion. Question is: Is there a "word" in the jargon of physics to describe a "stationary" state = position?

[@Malidictus]

Next time should be quite interesting, since I have a sneaking suspicion that we'll get to calculating a ballistic arc and why 45 degrees gets you the longest distance.

[@TheScienceVerse]

btw love the intro theme

[@youssefmosleh9547]

Hay I have a question?: what is the physics of a ball curving when throwing it

[@bru513]

watching it in 2017. You make Physics fun!!!

[@Pathos312]

Thank you for sharing this.

[@jincyquones]

Vectors are my favorite!

[@luayabdelhady7762]

this is the first time I watch this channel and I must say, your eyes are the most beautiful thing I have ever seen

[@appa609]

Good job.

[@florbz5821]

I can't wait for you to start talking about university level physics!!! I would love some explanations for some subtle details my lectures confuse me about! :D

[@mckseal]

+flabberghast What sections are you struggling with?

[@michaelsommers2356]

+flabberghast This is where university-level physics starts.

[@florbz5821]

well at the moment I'm REALLY struggling with vector calculus... i'm in first year so the rest is ok...but that's just too hard for me haha