Friction: Crash Course Physics #6

[@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

[@MrARock001]

I love how simple physics is so useful, so long as you've memorized all of the infinite possible coefficients.

[@oldasyouromens]

Her accent combined with the rhythm of the way she speaks makes this course pretty easy for me to grasp.

[@ghosttowned]

We almost have the same name and yeah your right!

[@henywetherford901]

no

[@maxwatchman6129]

She doesn’t take a single breather for us to collect our thoughts.

[@DavidKrama]

@@maxwatchman6129 cRaSh CoUrSe

[@haven_143]

I usually hate British accents but hers is different so it’s not that annoying

[@StereoSoundAgent]

I wish I had discovered this a week ago. I'll be watching 3 of your physics videos over the next 24 hours repetitively to obtain a better grasp. Your series is the only series of youtube videos that makes the material possible to comprehend.

[@nirupamkhanal6466]

Host:"The first thing we need to do is draw a free body diagram of the slope" Me: *in horror* "NO, STUPID. WE NEED TO STOP THE BOX."

[@sqkqfiona8358]

Nirupam Khanal exactly what I was thinking too😂😂

[@designer8812]

hEHEHEH!!!

[@idkanymore9449]

Seriously? Not funny 😒

[@IPGD]

Wonderfull. I love the host. She is able to deliver it well. Mostly Physics are delivered in a boring way. Thank you for great video.

[@kidi1232]

As my physics teacher taught me: No friction = no joy.

[@theimmunegamer8123]

kidi1232 what does she mean by no friction no joy

[@aniketsamal8346]

@@theimmunegamer8123 fu.. k

[@weeb69]

@@theimmunegamer8123 too young.

[@weeb69]

@ML Gaming sex joke, you're too young

[@seasj4241]

oh my gosh

[@l.benjamind.9003]

so I was like, "Bro, I should totally watch this video, it sounds cool." I watched for a couple minutes, then my brain exploded.

[@l.benjamind.9003]

+Morgan Freeman If this is actually Morgan Freeman, I might die. Dude, awesome.

[@TjasaZ]

hahaha this made me laugh so hard. thank you

[@DeadPyro96]

This was way easier to understand than the Derivation and Integrals episode honestly.

[@mywayrocks]

just basic Mechanics bro

[@tanyay1073]

Same 😂 I zone out a lot...

[@lilliang3521]

comment section: oh no trigonometry me: laughs in physics c

[@hickswasright4675]

I really love how the nerdiness has been 'ramped up' in this series.... I'll show myself out.

[@ThePandaclash]

+Hicks Was Right Ba dum tiss Go back to undertale Sans...

[@tetragon2137]

"You are a horrible person. That's what it says. A horrible person. We weren't even testing for that." -Glados

[@yurivillacasten4367]

Hicks Was Right àp"1 Zombie h ghnngnh

[@AndewMole]

@@yurivillacasten4367 r/ihadastroke?

[@AgentOrange329]

I'm 'inclined' to believe you are right ;)

[@EugeneKhutoryansky]

Understanding the friction in the interpersonal relations between human beings is much harder than understanding the types of friction discussed here.

[@lancelovecraft5913]

lol I was about to make a similar comment

[@hasnain9654]

Physics Videos by Eugene Khutoryansky Your bed will fall down without friction.

[@aneesurrahman6773]

causes of friction

[@johnocallaghan7862]

Physics Videos by Eugene Khutoryansky

[@nontology]

Your videos rock. I can't believe you're an actual person who makes comments on vids.

[@aquamus]

As a university physics student, I suggest discussing Galilean transformations soon. It was so frustrating getting to university and realising 3D problems, which were difficult in high school, could be simplified to the point of being almost trivial. Also, a good understanding of Galilean transformations makes special relativity (later on) much easier to understand :)

[@RagerQueen]

*hears the word trigonometry* *screams in terror*

[@omarelnaggary6652]

you're a loser if you think that basic trigonometry that's used in mechanics is hard. I hope this is a joke. Have a good day

[@therealspaghetti208]

Narwhalla are you 6

[@purkayastha_madhura]

OK besides the argument going on, how do you make your font bold???

[@rockyjoe3817]

Omar Elnaggary A fan of Flipping Physics channel cool :)

[@HorizonSpeed26]

well I don't usually agree, but trig is difficult and requires a bit of dedication.

[@sagnikchakraborty2837]

8:20 "Nothing is going to make it start rising above the surface of the ramp, right?"

[@kamalbhamra3146]

Remember kids, The only difference between screwing around and physics, is writing it down.

[@isaacliu896]

that's how Newton figured out calculus through physics... screwing around and writing it down

[@joshbobst1629]

+Isaac Liu And Leibniz, don't forget about him.

[@dumbnerd8316]

Josh Bobst God created the perfect universe where screwing around is physics

[@harkritsandhu9711]

bruh this guy replies to literally every physics crash course video

[@shaunak601]

@@harkritsandhu9711 XD LOL

[@HeintZ77]

I have a physics exam coming up so these videos are going to help alot! Thank you Crash Course and Dr. Shini Somara.

[@selinamasetle7688]

I recently discovered this channel, I always used the crash course for physiology and started to use this one for physics and I just wanna say you are a great help, everything makes more sense now so thank you...I always give appreciation where it is due so keep up with this!

[@ahorrell]

Trigonometry? Great, now I need Crash Course Math. DON'T TEASE ME I'M OLD AND NOT SMART Loving the series though

[@danielbody6051]

+Aaron Horrell They really should do that though!

[@evanknowles4780]

+Aaron Horrell There should be a different crash course for the different disciplines of math, like how they have ones for the different disciplines of science.

[@sweeneytod4734]

@@evanknowles4780 There are plenty of resources for that though on yt, like khan academy, professor leonard, numberphile.

[@crashcourse]

Let's talk about friction!

[@crashcourse]

+Sunhee Lee Thanks! :)

[@Big_Bert]

+Mordecia potatoes are illuminati

[@TGC40401]

+CrashCourse As long as it's non-fiction.

[@AlexSh789]

Quit saying "M-U", seriously. It's a single symbol: Greek lowercase Mu (μ).

[@AlexSh789]

+Sunhee Lee At 4:54, for example.

[@wii3willRule]

CC Calculus next, please! I appreciate what this channel is doing.

[@MrARock001]

I think they'll get to calculus in this course, as it's the language Newton invented to describe physics.

[@JM-us3fr]

How about CC mathematics? I've been waiting years for it.

[@wedfrest]

They've already done derivatives and integrals mate.

[@김두아-r5n]

yaaaaaa math ISCOOL

[@darkandcurious1277]

She is really something! Wasn't sure if I was 'glued' to her presentation or to her looks.

[@alishasvlogs7622]

The host makes me enjoy physics more then when I am in class

[@MrJ3]

The "s" sounds in this video are quite sharp. I wear good quality headphones and it was actually bothering me throughout the video. Not sure if there's some way to mute or tone down those sharp sounds that come from words with "s" in them.

[@crashcourse]

+Eeriewolf Yep. This was the last video we shot with that issue. It was actually a signal issue and not something that deessers or any amount of post processing could remove. I didn't hear it in the headphones at the time but have since solved the problem. :) -Nick J.

[@MrJ3]

CrashCourse Great to hear! Keep doing what you're doing! :)

[@alexw.8046]

Omg me too, I thought I was just being hypersensitive

[@freakenproduction]

+CrashCourse What an awesome response, you really care about your audience :). I hope you guys keep doing this. I sincerly think crashcourse has grown to a size that will be remembered in history books later, you guys are changing education on a global level, please keep realizing this :)

[@nathanwood5481]

Look up a real-time low-pass filter.

[@indibindylou]

Crash Course Physics??! Crash Course GAMES?!? The stupid sub box didn't tell me until now! I'm so excited to watch these!

[@crashcourse]

+indibindylou Well... that's discouraging. The sub-box issue, I mean. Not that you're excited. You being excited is VERY encouraging :) -Nick J.

[@jive.rider_6953]

You teach me math in a science video better than my math teacher 😂

[@vectoredthrust5214]

Wasn't expecting the Seinfeld reference, or the reference to Jerry's new show "Comedians in Cars getting coffee" either I love this channel. As someone studying aerospace engineering now, this makes me nostalgic for my physics classes in secondary school

[@effexwhore]

I was caught off guard too! I love Seinfeld lol

[@vihaanmenon7175]

I want to get into aerospace engineering as well. Could you tell me anything about the field that'll help ? Thanks!

[@WindFireAllThatKindOfThing]

That was a surprisingly engaging lecture. Good use of metaphor, human delivery, and graphic training aids strike the correct parts of the proper lobes.

[@VEE727]

1:15 Kramer's entry was perfect!!

[@thepatriot19]

What i love best about crash course; the way the show it is pretty much how i was taught. So when i show other students (i am college tutor and supplemental instruction leader for intro physics) these videos they get it in pretty much the same way that their teacher showed them.

[@madeleinebraye6866]

I am a college student sitting here drinking my coffee and preparing for an exam. TF for you fam.

[@NEWGREATNESS]

I just took a brilliant nap while listening to this. Her accent is soothing and refreshing.

[@codythompson9750]

Hey guys!!! First I'd like to say how much I absolutely adore your channel, I've learned so much from you guys (The philosophy is a particular favourite of mine) and you're both absolutely brilliant. Secondly, if you're considering starting another series sometime, would you consider doing one on ancient myths? Say Greek, Norse, or something along the lines of that? Or is there some video/s about that that I missed? I love you guys, thanks for doing what you do! (P.S Hank you made me question everything and all my friends think I'm insane because I keep rambling about reality and mortality and apples in baskets and god and knowledge. Thanks for that XD. But You also made me want to become a philosophy professor, so there's that.)

[@mahaalyas6113]

Bless your soul, your team that has created these videos, bless your life...just bless. All your videos have helped me understand things that my professor made so hard to understand.

[@thePocketWatch45]

i love your videos!

[@crashcourse]

+Rusty Powers Thanks :)

[@responsiblelobster5223]

I passed a GCSE with an a just by watching these as my revision tbh pls continue the physics ones often. because they save lots of pointless revision reading. physics is common sense with the knowledge of the fundamentals honestly

[@TalysAlankil]

The way you pronounce μ is funny to me

[@adamqazsedc]

Mew

[@Abaris84]

I lasted 5 minutes before I didn't have a clue what she's going on about. New personal record.

[@zuzusuperfly8363]

+Abaris84 Well, anything you need help with?

[@cyrusmufc2914]

I lasted 3 seconds

[@wunderkind7762]

Thanks for making such awesome educational videos! I just wanted to say. It might be cool to one day see a series for art history -

[@yukonii0]

Physics is more interesting when you take your time to learn it, not like school teachers who rush stuff just for the sake of finishing the book. thanks to you friction is much easier to understand

[@DaveWasley]

These are amazing. College grad, but 11 years out, I feel like I’ve forgotten all this stuff. Thanks for the refresher.

[@Kaoji]

Stoked for Uniform Circular Motion- this pacing is awesome.

[@isaacalonzo-kb1yc]

This is awesome, you can also use this and apply it to your relationships.

[@andrewkiminhwan]

she makes physics interesting!

[@coursecreel]

Wonderful lecture. Method of explanation is very good.

[@Locke99GS]

I've never heard somebody say μ by spelling out "m u" before. I'm sure the script had written "mu", but I'm fairly confident that they intended for it to be pronounced μ, as "myoo"

[@zuzusuperfly8363]

+Locke99GS I say, myew. Never changing it.

[@megasonicgeo]

+Locke99GS msolja boy tell em

[@UnashamedlyHentai]

+leein jeon Myoo is the generally accepted pronunciation, though dictionary.com does list 'moo' as an alternate. Their 'speak this word' button uses 'myoo.' www.dictionary.com/browse/mu

[@zuzusuperfly8363]

***** Okay cool so I'm saying it right.

[@idkanymore9449]

Your accent is really amazing and really rhymed with the way you talked it made it even more fun to watch!!! Thank you helped a lot you’re nice keep going

[@angelicakirana1500]

i wish u guys can create a pdf or some sort so i can download it if i wanna comeback and read them

[@DinaKubba]

I literally took my AP Physics exam 3 days ago, I don't know why I'm watching this. Force is just a really interesting topic.

[@zuzusuperfly8363]

+Light Yagami You shouldn't think of school as providing any relevant milestones. If you're still interested in forces, you should learn more about them for as long as you're interested. Do it because it's fun, not because someone else wants you to.

[@zuzusuperfly8363]

Dina K Pesky school getting in the way! I just finished my last year of school, ever, and I tended to have a habit of mostly ignoring 1 of my 5 courses. I can't be distracted by 5 courses simultaneously. I usually stay really interested in like 3. I feel for you.

[@zuzusuperfly8363]

Dina K I used to care about my GPA until the stress caused me to get shingles, which is usually unheard of at such a young age. The doctor said I was the youngest case he'd ever seen. After that, never again will I consider grades to be anything to worry about. It's not worth it. I worry about physics when I feel like it, and that's good enough. It was good enough to get me an A on my honors thesis, so I think there's something to be learned from an attitude of not caring.

[@OviWanKeno9i]

Always had a weakness for physics girls. Some of the best gfs I've had. She definitely reinforces it :) The actual content is pretty simple. I think the problems were part of every physics course I've ever taken. Once you get the free body diagram correct with split vectors, it's all matching equations.

[@AdolfoAguilarVideos]

7 years and this video still helpful. Thank you

[@annalovelace685]

I've taken physics, I know this stuff, I do a fair amount of 3D programming ... but I thought this moved a little fast to follow especially at the end. Good production value as always guys but I think you might want to keep the picture on the diagrams a bit more when explaining concepts.

[@PinkChucky15]

I've been out of college for three years now but I really enjoy watching these videos :-)

[@ragnkja]

μ (mu) is simply pronounced "mew", not "em you".

[@MrDoob-xo3sm]

+Nillie mew mew mew mew mew mew mew mew mew mew

[@ThePandaclash]

+Nillie I have a mewtwo EX! And a special Generations Mew Pokemon card!

[@lsmrkqj]

Nillie might be the accent

[@jaskay1309]

says who lol

[@ragnkja]

Yasemin Kayali Dr Somara replied to another comment that this error may have been her misreading off auto-cue.

[@dukesook]

This is probably the best video I have ever seen.

[@zinhlenonhlakaniphomtolo2646]

This helped so much!!!!! Last minute revision for my finals. Thank you Crash Course

[@robertdonohue2215]

The greatest series ever

[@AyeshaKhan-gp9on]

If the bookcase is in equilibrium, force exerted by our hand equals static friction and the bookcase doesn't move. But if the force exerted by our hand is less than static friction and the bookcase still doesn't move, is the object still in equilibrium?

[@AyeshaKhan-gp9on]

Bob McBobberbob Okay, thanks

[@nicolassamanez6590]

yes, remember that it changes its strength to match up the applied force, as long as it is less than or equal to the max static friction. once the applied force (from, I dunno, your hands or something) passes that amount, it will be no longer in equilibrium.

[@MonkeyDLuffy-xr4fl]

The magnitude of normal force changes in response to the exerted force. Since max force of static fricition= coefficient of static friction * normal force, the static friction changes and thus is in equilibrium when not in motion

[@irfankarmali4849]

yes it's still in equilibrium, because static friction changes according to the applied, if the maximum static friction is 5N and you apply 3N, then the static friction opposing your applied force is also 3N, the maximum is 5N , that doesn't mean it's always 5N it changes to match the applied force so long as the applied force is 5N and below.

[@blckout20]

Good video! A bit more easily understood than some so far in the series. I would have briefly reviewed friction on a flat surface before moving to friction on an incline, but limited time I suppose. This series bringing me back to undergrad!

[@magda_mf]

Can someone please explain me why static friction is not related to Newton's third law? Because these are quite similar concepts and I can't really grasp the difference. Thanks And, by the way, is someone also watching in 0.75 speed? :)

[@shaylempert9994]

Just came back from a sorting test for a mechanical engineering program. Someone talked about airodynamics, after that we had to do a test on it. After this (especially with me being in 9th grade) I can learn whatever you throw at me.

[@olivierg.9479]

+Shay Lempert Okay, you'll see in the future that no matter how much you learn from one domain, there's always more to learn. I've learned about what's in this video 6 years ago and I'm still having a hard time understanding things in material science now.

[@shaylempert9994]

+Olivier G. Just expressing my relief it's over.. But thanks for the advice :)

[@Hecatonicosachoron]

Stick-slip friction covered before the (easier, more intuitive, and mathematically more beautiful) fluid friction? Not what I expected from a fluid dynamicist! It would be good to state and solve the equations of motion for cases where the acceleration is proportional to the velocity (plus an arbitrary function of position and time) - the resulting equations are very pleasing. It also shows why 'parabolic trajectories' in ballistics are not really parabolic when projectile is moving through a fluid. I also played a little game to see how many comments I had to scroll down before somebody gets to express something derogatory or unpleasant about her gender, or something irrelevant about her appearance - I got 13 (although #18 and #19 were little gems). I consider this to be an improvement from previous videos on this series. Now, comment order does change with users and with time, so the order might change. But it is an interesting state of affairs to say the least.

[@anastasiagavrilita6567]

Crash Course saves lives over and over again! Thank you so much for your hard work!

[@sosanmia3]

That Seinfeld reference though ♡

[@HeatherLKelly]

3:15: The normal force is NOT the reaction force of the weight force. The weight force is the force with which the earth pulls on the bookcase, and its reaction force is the bookcase pulling on the earth. No two parts of an action/reaction pair can be drawn on the same free body diagram, since they act on different objects. The value of the normal force on a flat surface (as in the bookcase example) should be calculated the same way you calculated it in the slope example--using equilibrium.

[@zynk6538]

Sponsored by Audible? NOT LIKE AUDIBLE SPONSORS EVERYTHING.

[@juliusdictatorperpetuus2147]

Pretty sure Audible is the Illuminati of KZbin, only they don't bother with secrecy, they know no one will stop Audible taking over KZbin.

[@Twitchi]

+The Royal Gamer and its pointless advertising as well, every one knows audible, not many people can name ANYWHERE else to get an audio book

[@Kaalyn_HOW]

+Twitchi -- AND, the "special offer" they give viewers with the "promo code"/links to, like, get a free audio book or 30-day trial (and like Squarespace and their 10% off, etc) are the same offers they give to all new users, no matter where they came from or how they found their site. You get nothing that regular people aren't getting by using the promos they make youtubers tout. The youtuber gets a small kickback when you use their link vs. just buying said item...but we as viewers save literally nothing. It's just a trick to make you THINK you're getting this cool special deal or a secret discount by watching a youtube channel you like. Nah, you aren't getting anything that everyone else isn't already getting. It'd actually be better if they DID give you a mild something for watching. Then it'd be worth all the ad space in the YT content. But if you're just forcing them to tell me that you simply _exist_ as if I didn't already know that, I'm annoyed. If there was a genuine "deal" we (or other followers/fans who did want the product) could get by watching them, then I'm less annoyed bc someone of us there are benefitting. But this way is just sleezy all-around. They all make bank, while we lose all the YT content time spent on their ads _and_ money after being misled. That's gross.

[@ASLUHLUHC3]

Squarespace is also taking over youtube

[@ghosttowned]

Tik tok is taking over KZbin and it's already to late😾😿😭😭😿

[@arnavmanjul4464]

I would've failed my Physics test without this girl

[@ace_stealth251ace9]

I did not understand after 5min:(

[@crashcourse]

+ACE_stealth251 [ACE] There's a lot going on. I recommend going back and pausing it and turning the captions on :)

[@shabasupermayn]

+ACE_stealth251 [ACE] read edexcel m1 book it helps with examples

[@haydenray4303]

+ACE_stealth251 [ACE] Don't worry, took me a whole year of AP Physics to really understand any of it.

[@MrDoob-xo3sm]

+ACE_stealth251 [ACE] I feel for you

[@sniperammow4865]

ACE_stealth251 [ACE] take notes, you need notes and practice problems.

[@isaiahm99]

Took me a few reruns to fully get why we use sine of gravity for the force pulling it down the ramp and cosine for the force of static friction (because sine is y and cosine is x in calculus) but I got it. For some reason I've always understood chemistry a whole lot easier, even though it's a world that we can't see, but oh well. Thanks for the video, I really enjoy not being confused lol

[@thegaspatthegateway]

Just some feedback, so you can ever improve your teachin' :) : when you declare that an interaction occurs, no matter how passing it made seem, can you reiterate WHY it happens in a teensy aside? When I don't understand the broader reasons for a thing, I start to get lost >o< otherwise, thank you for your work in putting out this wonderful free resource, all for the sake of bettering us. cheers!

[@Waggles1123]

Might have been better to do that last equation symbolically to show that the mass of the vase or the gravitational force doesn't effect whether or not it will slide down, it's only a matter of the angle and the coefficient of static friction. F_x,net = m*g*sin(theta) - mu_s*m*g*cos(theta) = m*g*[sin(theta) - mu_s*cos(theta)] if m != 0 and g != 0, then there is motion if sin(theta) - mu_s*cos(theta) != 0, regardless of what m and g are.

[@ThePaintballgun]

I FUCKING LOVE PHYSICS!

[@NeonsStyleHD]

+Don&#39;t Even Bother Ditto

[@BennoRob95]

My favourite physics teacher yet!

[@thesweetestjp]

Once she said we have to use trigonometry I was like, "AH HELL NAWWW AH AH"

[@martianfrog7273]

I also have a channel please subscribe

[@sourabhsup]

Very helpful video. Just 2 questions- 1. coeff of static friction > coeff of kinetic friction on a flat body(book shelf case). is that right? 2. is coeff of kinteic friction varying quantity with time? and if yes, what is the relation?

[@vikky2076]

6:34 looking at this I thought I just lost my brain....

[@evolutionxbox]

I didn't really learn any of this in school. I am sooo glad this exists.

[@TheFireflyGrave]

So is friction the main reason why it's often easier to 'walk' a heavy piece of furniture rather than push it along the ground?

[@zhen3356]

Yes

[@tiktok-ex6zq]

Exactly

[@surya8891]

nice explanation on kinetic and static friction .

[@chase2806]

Goodness gracious I feel so dumb not understanding anything she is saying. I can follow what she says though.

[@cyrusmufc2914]

she's to fucking cute

[@cyrusmufc2914]

she's to fucking cute

[@ghosttowned]

@@cyrusmufc2914 she is pretty but why did you say it two times but she's pretty but I don't like girls cause I am a girl

[@CesarCicero]

+CrashCourse, You use the static friction coefficient to find acceleration, but you should had use the kinetic coefficient to find acceleration, because while the box is accelerating it is moving too.

[@CorvaireWind]

+Cesar Cícero on the reactive force, but that should have been included. Good catch Cesar! ;O)-

[@michaelsommers2356]

+Cesar Cícero No, she used static friction to determine whether the box started to move.

[@nashihaahmed]

Crash course computer scienceeeee

[@jadraad2934]

Seinfeld reference, Utter perfection !! Hilarious !! You have out done yourself crash course and though caffee !!! :)

[@arachnodev]

At 7:29, is that kinetic facebook?

[@sharkdavid]

Debashruto Bhattacharyya lol

[@irekooo20]

OMG , I can't wait for the rest of the courses :( !!! I LOV U

[@lovefrombooks7]

already did terribly on my AP exam :( (totally rocked calculus today though...)

[@raulchachapalma2662]

I have to say these classes are amazing that I decided to watch it again

[@BangMaster96]

umm what ...?

[@prakruthidesai2989]

I'm not failing physics thanks to this! I owe you one, CrashCourse.

[@aronbriggs7783]

I tried watching this video on 2x as i had little time to watch it. Bad idea 😁

[@mmunz]

I have a final on this tomorrow, and this video was VERY helpful!

[@Lottanubs]

Can't wait until she gets into quantum mechanics and relativity :P

[@chowtom5174]

+Lottanubs that escalated quickly....

[@emelradjo7788]

+Lottanubs that would be nice

[@hitormisshuh]

It sounds bad already. How much more when you try to understand it...

[@tintintintin2174]

you shall try watching lectuers by walter lewis

[@Zzznmop]

you physicists are so damn good at math. I'll stick to chemistry

[@thebluegremlin]

I swear, I have heard her voice in a game somewhere

[@MrDoob-xo3sm]

+Xion Heart ikr

[@OnionChoppingNinja]

+Xion Heart She sounds a bit like Samantha Traynor from Mass Effect 3. Think it has something to do with the British Accent. Not the same person though.

[@MrDoob-xo3sm]

OnionChoppingNinja hm...

[@thebluegremlin]

+OnionChoppingNinja hmm... not really maybe it is the accent

[@aristidess1190]

+Xion Heart she speaks like margarie tyrell of game of thrones

[@newbooksmell4163]

this is literally the equation I need today for my physics project! Thank You Crash Coarse! :D

[@megasonicgeo]

+Marvel Mockingjay ;-; The AP Physics exam was two days ago, this series happened too late for me.

[@lostfan10000]

+Geo IB exams are tomorrow. It came out just in time for us. :D

[@megasonicgeo]

lostfan10000 I've heard of IB but they don't have it at my school, what is it?

[@lostfan10000]

***** The International Baccalaureate (IB) is a program that was created by UN diplomats so that their children could have a standardized curriculum no matter what country they are in. Today they are higher level courses that focus more on critical analysis and college prep rather than mass amounts of content. After two years worth of courses you take the IB exams at the end of your senior year which is what we are doing right now. That's the short version. :D

[@megasonicgeo]

lostfan10000 Sounds like I missed out, are you outside of U.S.?

[@nealdesai8779]

guys I have the solution to all your problems; hover over the video, click the gear in the bottom right, change speed to .5 If only there was a .75

[@eyadmardini8904]

+Ziggy Stardust chrome.google.com/webstore/detail/youtube-playback-speed-co/hdannnflhlmdablckfkjpleikpphncik

[@AthAthanasius]

+Ziggy Stardust Yeah, if nothing else the editors need to adjust things to have equations visible on the screen for more than 1-2s. Ideally they should be there for the entire period of time they're being talked about.

[@BlueyMcPhluey]

+Ziggy Stardust it sounds like she's drunk if I listen to it at 0.5x

[@anywallsocket]

+josh mcgee i thought she sounded blazed haha xD

[@nealdesai8779]

***** the latest vid she made is much easier to understand. They listened to the advice and they've fixed the issue.

[@daffyfilms7075]

The males in my class are really learning from you. Thank you.

[@ErenMortel]

Sad we didn't get to talk about my crush's body sliding down to mine,,, God,,, how much friction

[@rebecca7295]

SEINFELD!!!!!!!!! YASSSS I didn't know that the two could combine....

[@Taevec]

I can't understand this stuff. I've gotta watch each video like 3 times. 😫

[@Taevec]

Just to be clear, it's not you guys' fault. I just suck at math.😅

[@KryscyRose]

your not the only one i think she just talked way too fast

[@Taevec]

+KryscyRose They do break it down pretty well. It's just me. I'm just now figuring out normal force.😅

[@U_F_N_M]

Understanding how friction is working physically is very interesting. But I face-vault at doing trig to figure out you really shouldn't set things down on an incline!