Rotational Motion: Crash Course Physics #11

แชร์
ฝัง
  • เผยแพร่เมื่อ 8 มิ.ย. 2016
  • Did you know that at a certain point on a moving wheel... there's no motion? I mean, kinda... it's all relative, right? Prepare to have your mind blown in this episode of Crash Course Physics where Shini delves into the world of rotational motion!
    --
    Produced in collaboration with PBS Digital Studios: / pbsdigitalstudios
    --
    Want to find Crash Course elsewhere on the internet?
    Facebook - / youtubecrashc. .
    Twitter - / thecrashcourse
    Tumblr - / thecrashcourse
    Support CrashCourse on Patreon: / crashcourse
    CC Kids: / crashcoursekids

ความคิดเห็น • 699

  • @crashcourse
    @crashcourse  ปีที่แล้ว +16

    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

  • @arielthomas8737
    @arielthomas8737 4 ปีที่แล้ว +733

    Binge the whole series at 2x speed to ascend to a higher level of consciousness

  • @louieramirez4032
    @louieramirez4032 6 ปีที่แล้ว +73

    If you're not getting it the first time. It might be a good time to review your textbook, speak to your instructor/tutor, or simply, rewatch whatever portions of the video you do not understand. That is it. It is fortunate that CrashCourse is producing such high-quality videos and squeezing large volumes of content into ~10 minute videos FOR FREE. Great work CrashCourse keep it up and keep the same style of videomaking.

  • @maryal.9208
    @maryal.9208 7 ปีที่แล้ว +541

    Wow i WISH i could speak this clearly and this quickly at the same time 👏🏼👏🏼

    • @titsmenold
      @titsmenold 6 ปีที่แล้ว +9

      shes reading a script

    • @mwu365
      @mwu365 6 ปีที่แล้ว +41

      +MT Holdings is that not speaking?

    • @sohanchacko3453
      @sohanchacko3453 6 ปีที่แล้ว +4

      Matthew Wu the Marya kid made it sound as if she was reading it off the top of her head

    • @NoActuallyGo-KCUF-Yourself
      @NoActuallyGo-KCUF-Yourself 5 ปีที่แล้ว +7

      Either way, it is clear and understandable, esp. @ 0.75x speed.

    • @bogulans2897
      @bogulans2897 5 ปีที่แล้ว +3

      That's why its called CRASH Course

  • @oshkoshbjosh986
    @oshkoshbjosh986 8 ปีที่แล้ว +1557

    To everyone criticizing the speed of delivery, it's called "crash course"--not hold your hand and wipe your nose physics

    • @ghalibhaidar7381
      @ghalibhaidar7381 8 ปีที่แล้ว +21

      word

    • @seandafny
      @seandafny 7 ปีที่แล้ว +19

      Tell em

    • @wobblemanjohnsonheisenberg
      @wobblemanjohnsonheisenberg 7 ปีที่แล้ว +16

      Josh A fr they got replay or rewind

    • @robertparks2933
      @robertparks2933 7 ปีที่แล้ว +5

      Josh A don't pull any punches, LMAOOOO

    • @Patzerii
      @Patzerii 7 ปีที่แล้ว +48

      Indeed, these videos condense several hours of normal class room study into 8 minutes.

  • @sianashsad7805
    @sianashsad7805 5 ปีที่แล้ว +648

    And I thought Eminem was the rap god.
    Now we have a rap goddess........

  • @Inxective
    @Inxective 7 ปีที่แล้ว +161

    5:57 - 6:20
    uhuh, yup, yes, alright, oh!, okay okay. yeah
    wait.
    what?

    • @abhilasha9608
      @abhilasha9608 5 ปีที่แล้ว +8

      Relatable

    • @3SPR1T
      @3SPR1T 5 ปีที่แล้ว +4

      yea even when you already know this stuff it's still a bit confusing at that part

    • @lightspeed2014
      @lightspeed2014 4 ปีที่แล้ว +2

      Imagine the tangential velocity of the the point below the center to be linear velocity for one moment and imagine it going away from the circle, but the whole circle itself is moving forward, so that point is also moving forward, since it is literally moving in opposite directions at the same time with the same speed, it’s velocities cancel out and become 0.

    • @zoewest5604
      @zoewest5604 4 ปีที่แล้ว

      @@lightspeed2014:o

    • @lightspeed2014
      @lightspeed2014 4 ปีที่แล้ว

      Zoe West did you get it.

  • @tanyaponte6779
    @tanyaponte6779 5 ปีที่แล้ว +46

    Watching it as a review the first time blew my mind indeed (it has been 7 years since my last physics class), but re-watching it does help. It made more sense to me the 2nd time around.

  • @PepperTheDeadly
    @PepperTheDeadly 7 ปีที่แล้ว +13

    Having an American physics teacher and a British crash course host has rly heightened my awareness on how much pronunciation differs b/w the countries

  • @erikziak1249
    @erikziak1249 8 ปีที่แล้ว +27

    Brings back memories from long ago, when I was studying mechanical engineering. Nice to see that I did not forget everything, as I ended up in IT and actually never worked in anything related to what I studied. But I am not sure how the normal audience manages to keep up with this series. I personally like it.

  • @LeFancyTopHat
    @LeFancyTopHat 8 ปีที่แล้ว +151

    As a veteran physics tutor, I approve. You guys covered a lot of common points of confusion. Well done!

  • @hakimimdnoor5634
    @hakimimdnoor5634 6 ปีที่แล้ว +408

    It good for revision.but hard for 1st time learning

    • @Funymoney010
      @Funymoney010 5 ปีที่แล้ว +105

      Wow it's almost like it's a crash course

    • @nameuserza
      @nameuserza 5 ปีที่แล้ว +4

      very right👌

    • @armaanahmad3923
      @armaanahmad3923 4 ปีที่แล้ว +17

      Dude, it's a crashcourse. You don't learn stuff for the first time during a crash course ಠ_ʖಠ

    • @darshilpatel5267
      @darshilpatel5267 4 ปีที่แล้ว +19

      I don't know, getting the basis here is easy if you pause and understand then go to apply with practice in the books.

  • @DeMaxize
    @DeMaxize 5 ปีที่แล้ว +8

    I do not understand what people complain about .
    The speed of the speech is proper , just what you need to obtain the information . Actually as a physics student I find this series very useful , quick way to get an overview of the subject with relevant visualizations and without too much algebra . Nobody said that the course provides a PhD , this is a great way for somebody who already knows the subject to rehearse and see the physics a little bit clearer , without the algebraic fog . For someone who hasn't studied physics at academic level , this would be a great way to understand the idea of physics behind everyday phenomenons .

  • @timperry6948
    @timperry6948 8 ปีที่แล้ว +18

    It's actually pretty easy to understand and visualise.
    The wheel is basically pivoting on a constantly moving point. When a point is at the bottom, it is the pivot so, like a fixed pivot such the hinges of a door, it isn't actually moving even though the object is.

  • @TheFireflyGrave
    @TheFireflyGrave 7 ปีที่แล้ว +238

    What goes around, comes around I guess.

  • @TheCaseyKlinger
    @TheCaseyKlinger 6 ปีที่แล้ว +71

    These videos are awesome! I didn't have time to read any of my textbook before my physics test, so I just watched these videos for all 4 of my chapters and I got an 87 on the test!!

  • @magda_mf
    @magda_mf 4 ปีที่แล้ว +6

    I was already not understanding anything the lady said in the last minute...
    And there she goes 5:56 : "Here's the weird part"
    😅

  • @TripleAceAAA
    @TripleAceAAA 7 ปีที่แล้ว +3

    I love the way she talks and the speed at which she talks. It's perfect. She gets all the important details in

  • @me2143658709
    @me2143658709 7 ปีที่แล้ว +363

    An open letter to those who complain about the content delivery:
    Isn't it lucky that the information is being belied in a format where pausing, slowing down, and rewinding are all options? It isn't my intent to offend, but this video probably isn't exactly for you. That isn't to say crash course doesn't want as many people to enjoy their content as possible, but the original purpose was to be a resource for AP student. As someone who is currently in AP Physics and on this unit, this wasn't too fast. That's not to say that students are expected to catch everything just by watching it the first time through. But the students here are either watching it for a preview before class, an additional perspective, or a review before a test. No one is meant to walk away form crash course with a physics major. These are meant to be fast videos to give a basic understanding to curious internet goers and to help students learn and study.
    Best wishes,
    Vicki

    • @rangkara7201
      @rangkara7201 5 ปีที่แล้ว +11

      Indeed, its like 10 minutes before my exam and this video is helpful

    • @John-bb5ty
      @John-bb5ty 5 ปีที่แล้ว +7

      What the heck? I am a sophomore in college and I watched this video 1.5x speed to cram study.

    • @SA-wl3ny
      @SA-wl3ny 4 ปีที่แล้ว

      Great explanation. Was thinking the same thing

    • @RHTQ1
      @RHTQ1 4 ปีที่แล้ว +4

      Totally agree. Had to try to learn this digitally since school is canceled, and I've never really understood my teacher's lectures 100% anyway. These totally helped me get what I didn't already understand from previous lectures and review

    • @rainneskye527
      @rainneskye527 4 ปีที่แล้ว

      @@RHTQ1 same. Also, have you tried reading the textbook?

  • @rogerdotlee
    @rogerdotlee 8 ปีที่แล้ว +3

    My mind was blown, but I kept up with it. It also answered a question that I didn't even know I had.

  • @wijfiegroeneandijvie
    @wijfiegroeneandijvie 8 ปีที่แล้ว +10

    oh my, I love this! I don't get it...yet. I'll watch it some times and google stuff. But one thing is clear... this woman is awsome!!!

  • @Lee_yourboylee
    @Lee_yourboylee 8 ปีที่แล้ว +9

    AWESOME. Thank you for doing this. The rolling without slipping stuff was superb; i really needed an explanation of that and you guys delivered!

  • @VashdaCrash
    @VashdaCrash 8 ปีที่แล้ว +12

    "Learn" is a strong word for what I do with the series.

  • @david0aloha
    @david0aloha 8 ปีที่แล้ว +12

    Thank you. These videos are great. I've been waiting for this one! Needed to brush up on my rotational physics.

  • @Bitsmap
    @Bitsmap 8 ปีที่แล้ว +5

    These videos are going to help me a lot at the test to get to the college. And once I get there they will help me on getting better physics at the games I will create.

  • @Abundanceofjay
    @Abundanceofjay 6 ปีที่แล้ว +55

    To help everyone out, goto the settings on the video (gear icon) click speed and turn to .75.

  • @RagerQueen
    @RagerQueen 8 ปีที่แล้ว +25

    I'm seeing a lot of people in the comments being confused and that's why I think running a Maths crash course alongside this one would have been a good idea.
    I was in advanced maths class and taking extra physics lessons (for high school exams) and you really can't do one without the other.
    (Or at least if we're talking about the calculations part. You could do physics in theory just fine but this crash course is heavily focused on the formulae)
    ((Also, sorry if I made mistakes, I'm Hungarian so I didn't study these subjects in English))

    • @MrKierenisawesome
      @MrKierenisawesome 8 ปีที่แล้ว +3

      Your English is better than a lot of people on the internet and your comment had no mistakes. You did very well!
      I agree with your comment as well. It's a very good point.

    • @NeokingTech
      @NeokingTech 8 ปีที่แล้ว +1

      Your English is great!

    • @lucasm4299
      @lucasm4299 7 ปีที่แล้ว

      RageQueen
      *formulas
      Sounds better

    • @tiktok-ex6zq
      @tiktok-ex6zq 6 ปีที่แล้ว

      Learning physic in English is much harder for Asian than how it goes for westerners,but I'm trying so hard.English+maths+physics

  • @downtownwoodstock7149
    @downtownwoodstock7149 7 ปีที่แล้ว +5

    I love your videos. I have a hard time to pay attention when videos are slow and boring. this is great

  • @shaylempert9994
    @shaylempert9994 8 ปีที่แล้ว +43

    I broke...
    I need to learn calculus more deeply and than come back to this.

    • @Satanlikescheezwhiz
      @Satanlikescheezwhiz 8 ปีที่แล้ว +5

      This videl lecture had no calculus needed?

    • @shaylempert9994
      @shaylempert9994 8 ปีที่แล้ว +2

      it uses "derivatives", and the video before it used "integrals"

    • @TDRinfinity
      @TDRinfinity 8 ปีที่แล้ว +1

      They did videos which tell you all you need to know about calculus (very little)

    • @shaylempert9994
      @shaylempert9994 8 ปีที่แล้ว

      I watched it all. it may be good as a review of the concepts(the series) but its bad at teaching these concepts from no knowledge of physics. The fact that I learned some of these concepts allows me to see how terrible the course is. Its not like world history that you need to remember facts - in this course you need to UNDERSTAND the learned material, at least me.

    • @Fetrovsky
      @Fetrovsky 8 ปีที่แล้ว

      Feel free to ask; I can clarify.

  • @babis8142
    @babis8142 8 ปีที่แล้ว +21

    OK it was fun at first. Now it's like sinking in water. With every episode I get more and more lost

  • @david0aloha
    @david0aloha 8 ปีที่แล้ว +6

    This is so great. I needed a refresher on rotational motion!

  • @robertaspelin705
    @robertaspelin705 8 ปีที่แล้ว +4

    Love the series can't wait for more advanced stuff

  • @erasmith3511
    @erasmith3511 6 ปีที่แล้ว +5

    Thank you so much for the concept of tangancial and translational velocity cleared all my doubts....crashcourse is the best

  • @iamsuccessful2241
    @iamsuccessful2241 8 ปีที่แล้ว +1

    In our lessons, we study rotational motion a week before we go to periodic motion ..... but this video sums it up to the point that i need to repeat the video and some parts i missed all over and over again..... but it's awesome to know that the velocity on the point of the wheel at the ground is 0, if and only if it's not slipping forward on its own.

  • @frankzheng6838
    @frankzheng6838 6 ปีที่แล้ว +37

    For everyone complaining about this video being too fast... there is a thing called the PAUSE BUTTON. I didn't previously know about this subject when I watched this video, but if you take 20 or so minutes watching it (pausing and rewinding), you should be able to grasp all the concepts.

    • @adamwheeler5111
      @adamwheeler5111 4 ปีที่แล้ว +2

      You can slow down the video speed as well

  • @nicosmind3
    @nicosmind3 8 ปีที่แล้ว +2

    I have to say i like how the start music is half or less than half of what it was. Thats a great improvement :)

  • @scarlettrose3702
    @scarlettrose3702 8 ปีที่แล้ว +1

    Favourite series on here !! ❤️

  • @BillySugger1965
    @BillySugger1965 8 ปีที่แล้ว +6

    Great video, packs in a lot of info and I'm sure many people will need to rewind sections many times to get it all.
    One thing I found frustrating was I've never seen anyone treat angular motion from basics using tau instead of 2pi. While all the other references use 2pi, tau is a much more intuitive concept and one far easier for novices to grasp. Sure it's harder for those of us who are already familiar with the subject, but teachers should be making learning easier for their students, not themselves.

  • @sithumthathsarakoswattage3678
    @sithumthathsarakoswattage3678 4 ปีที่แล้ว +2

    Keep up the good work.
    Three cheers for crash course!

  • @barbaracristinadeassismelo5214
    @barbaracristinadeassismelo5214 7 ปีที่แล้ว +11

    This is one of the best times in my routine!Ilove ^the crash course^!I ove the fact of one woman teachs physics!It s rare in my country=p best wishes !

  • @UuGEARSuU
    @UuGEARSuU 8 ปีที่แล้ว +4

    love your videos - very helpful and easy to understand

  • @griffinhalperin5967
    @griffinhalperin5967 8 ปีที่แล้ว +2

    CrashCourse is the best! So many videos on fascinating topics taught in interesting and engaging ways! Thank You!

  • @redhat7025
    @redhat7025 8 ปีที่แล้ว +2

    Watching it again. Keep these regular please!

  • @sandygehrmann6309
    @sandygehrmann6309 8 ปีที่แล้ว +2

    The starting music is so good!

  • @0xbobbyboy
    @0xbobbyboy 8 ปีที่แล้ว +1

    I do not usually watch youtube videos in order to get educated in physics, because I prefer to study by book, since every concept is explained in very detail and it makes it optimal since you can move on, only when you truly understand it, which you can test by solving some problems.
    For me, this video serves as an excellent summary on the topic of rotational motion, since I have already studied it and I was able to get a very good revison by watching it.
    I wrote this comment as a response to people that are saying that they cannot follow this course. Almost nobody can, without pauses, if they are seeing this for the first time, because there are many important concepts to comprehend.
    As a future scientist, my advice is to always study the same material from different sources, because it will give you the best understanding, including CrashCourse, which I must say, has left a very good impresion on me.

  • @abdalrahmanarrob6802
    @abdalrahmanarrob6802 6 ปีที่แล้ว +1

    You did blow my mind 😂😂 I have to watch this a few more times

  • @fadhilinjagi4694
    @fadhilinjagi4694 6 ปีที่แล้ว +1

    Wow! This video was great, loved the accent and the lots of content.....but first time learners can get lost. It needs someone who is already familiar with these things. Thanks Crash Course

  • @sicgc7658
    @sicgc7658 7 ปีที่แล้ว +12

    I love these physics crash courses! So helpful too!

  • @oluwafisayoadekoya1042
    @oluwafisayoadekoya1042 7 ปีที่แล้ว +4

    Hey guys. What might help is hitting the spoke(wheel like thing) at the bottom left corner of the screen, this way you can reduce the speed of the video. Other alternatives are using the closed caption, and also going to Nerdfighter which is a website with transcripts the videos and transcripts along side. This way you can watch the video and read associated caption for better understanding.

  • @abcdoetmee
    @abcdoetmee 7 ปีที่แล้ว +1

    thank you so much for doing this. I personally love the fact that it is so fast. I am not a native speaker and I could follow it very well. I only had to go back ones and that was merely because I wasn't finished reading the equation. it is called CRASH COURSE so it should be fast. if it wasn't it would only time more time to learn.

  • @MasterGeekMX
    @MasterGeekMX 8 ปีที่แล้ว +8

    This 9 minute video outplays 1 month of my college classes.
    Good job and hailings from Mexico.

  • @kunalverma4772
    @kunalverma4772 7 ปีที่แล้ว

    really cool concept covering video ...totally changed my thoughts to right way

  • @jasonbasant5624
    @jasonbasant5624 6 ปีที่แล้ว

    Omg I have an exam tmrrw and haven't been paying attention this unit... Thank God for this channel.

  • @vvgghhgg5339
    @vvgghhgg5339 5 ปีที่แล้ว +2

    beautiful information😘. Wow!

  • @cpsneto1
    @cpsneto1 4 ปีที่แล้ว

    Thank you for the great videos!

  • @JeaneAdix
    @JeaneAdix 8 ปีที่แล้ว +11

    That woman is literally the most aesthetic person I think I've seen, a platonic embodiment if i've ever seen one.

  • @abror8153
    @abror8153 5 ปีที่แล้ว

    Thanks for the video, really helped!

  • @taltigolt
    @taltigolt 8 ปีที่แล้ว +10

    thankyou notch

  • @jBEAThouse
    @jBEAThouse 5 ปีที่แล้ว +2

    Loving what you all do. Believe it or not, I'm taking notes and trying to relearn this from college & learn any missing pieces...I'm not watching this to criticize. Mentioning this, because I think I found a mistake in one of the graphics. At 4:32, she says the revolution is 2pi times radians, but the graphics on screen left out 'r'. Again, I'm watching this to learn but wanted to point it out. Unless I'm wrong, never mind! Thanks

  • @EshaySfaDez
    @EshaySfaDez 7 ปีที่แล้ว +2

    Definitely need background knowledge on this but she did very well to condense it all in one go

  • @mayankrajprajapat8542
    @mayankrajprajapat8542 6 ปีที่แล้ว +1

    If anyone is unable to understand it, watch it two times more , you will feel the beauty of her delivery of knowledge .

  • @shypeach
    @shypeach ปีที่แล้ว

    visualization makes the concept clear. Thanks a lot!

  • @pierre-zy7ug
    @pierre-zy7ug 5 ปีที่แล้ว +3

    I studied physics for years and finally learn that the bottom of bike actually doesn't move.. Impressive !

  • @Hecatonicosachoron
    @Hecatonicosachoron 8 ปีที่แล้ว +1

    Very clear indeed, well done. Out of interest, what topics will this series cover?
    Will there be any special relativity? How about GR?

  • @sibahlekunene687
    @sibahlekunene687 ปีที่แล้ว

    i love you guys even more

  • @maximusdizon7267
    @maximusdizon7267 8 ปีที่แล้ว +1

    BEST TEACHER EVER!

  • @raisaab6715
    @raisaab6715 4 ปีที่แล้ว +1

    Thanks for this concept

  • @hawzhenslemane3966
    @hawzhenslemane3966 5 ปีที่แล้ว +1

    Well done that was helpful to me

  • @ReverendMeat51
    @ReverendMeat51 8 ปีที่แล้ว

    Love the "Scanners" reference at 7:00

  • @nachannachle2706
    @nachannachle2706 6 ปีที่แล้ว +1

    Funny that the more difficult the concepts, the more logical I find them to be.
    There truly is beauty in complexity.

  • @toobakhan1553
    @toobakhan1553 ปีที่แล้ว +1

    Thanks mam for such an amazing lectures

  • @VishalKumar-iw4bx
    @VishalKumar-iw4bx 7 ปีที่แล้ว

    awsum video ...thnku for quick revision

  • @morganmarshall5479
    @morganmarshall5479 8 ปีที่แล้ว +1

    I don't need any of this stuff until next year, but it's cool to know it already.

  • @accumulator4825
    @accumulator4825 7 ปีที่แล้ว

    excellent video!!

  • @nonorv3095
    @nonorv3095 5 ปีที่แล้ว

    So wonderful

  • @Pathsfound
    @Pathsfound 6 ปีที่แล้ว +37

    I don't see how people think you're supposed to use these videos to learn the concepts. There are textbooks for learning, this is for review.

    • @mathematiciantim3439
      @mathematiciantim3439 4 ปีที่แล้ว +5

      i have used these videos alot for learning new topics and i've understood them just fine

  • @chowtom5174
    @chowtom5174 8 ปีที่แล้ว +72

    Two mathematicians decide to have breakfast together. The waiter comes to their table and asks, "What would you like to eat?"
    The first mathematician replied, "I'd like to have r pi."
    So he got a full round pie which was twice the amount he asked and he was upset.
    His colleague couldn't help but say, "Stop thinking in circles for one moment will you?"

  • @wxoxozy
    @wxoxozy 8 ปีที่แล้ว +1

    Two uploads today? Nice.

  • @ipv2000
    @ipv2000 5 ปีที่แล้ว

    good basis before starting rotational mechanics for alevels :) thanks

  • @rishabhkrm
    @rishabhkrm 7 ปีที่แล้ว

    Crash course you are just awesome

  • @NoActuallyGo-KCUF-Yourself
    @NoActuallyGo-KCUF-Yourself 4 ปีที่แล้ว +3

    1:06 Fun Fact: "In 2020, Cern opens a cosmic portal that unleashes Cthulhu. Cthulhu runs for office and wins."

  • @user-xf9sw4wr8f
    @user-xf9sw4wr8f 6 ปีที่แล้ว +1

    Wow amazing

  • @BrechtPallemans
    @BrechtPallemans 8 ปีที่แล้ว +38

    I am so glad that there are video's about this because it is much easyer to rehearse for my exams ( I learned this at school). But because I am not a native english speaker and you speak very fast, I can't follow the video that good. Everything just flies by and it's probably the case for everybody that does not have already learned this. So I'd suggest you make the video a bit longer and speak calmly. It would make more sence because I believe the purpose is to educate people? But again thanks for the hard work you deserve a like.

    • @zuzusuperfly8363
      @zuzusuperfly8363 8 ปีที่แล้ว +5

      You can find a lifetime of resources on this exact topic by using Google.

    • @s3cr3tpassword
      @s3cr3tpassword 8 ปีที่แล้ว +15

      you could just play the video at half speed and add the captions.

    • @Thetarget1
      @Thetarget1 8 ปีที่แล้ว

      Press the little cogwheel at the bottom, choose speed and set it to 0.5. Then press the rectangle with CC written on it to turn on captions. That should make it easier to follow.

    • @kamalbhamra3146
      @kamalbhamra3146 8 ปีที่แล้ว

      +s3cr3tpassword You can't slow down the video on an iPad (or I may not have figured that out yet). So everything sure does fly by me 🙄

    • @Thetarget1
      @Thetarget1 8 ปีที่แล้ว +1

      Jas Bhamra Have you tried playing it in a browser instead of the youtube app? Maybe you can if you use your browser.

  • @gauravbhati220
    @gauravbhati220 4 ปีที่แล้ว

    How people can have guts to dislike your videos...i really don't think i need to tell you that you are bessttt😙😙😙

  • @TheMustachedMustache
    @TheMustachedMustache 8 ปีที่แล้ว +1

    Well I have a mock exam on this today and this is pretty much the only study I'm doing for it XD

  • @1dunno325
    @1dunno325 7 ปีที่แล้ว

    I love crash course thanks for the info

  • @StephenGillie
    @StephenGillie 8 ปีที่แล้ว +5

    Meanwhile, in circle-strafing, you're increasing your transverse velocity, which is just the angular velocity of a larger circle. So you're maintaining a higher angular velocity with a larger circle, and outrunning your opponent, who has a slower angular velocity despite having a smaller radius to travel.
    Dude, I'm so high.

  • @mofiali2952
    @mofiali2952 4 ปีที่แล้ว

    At 3:26. The angle in radians times the radius = arc length. Therefore, the tangential velocity = the length of the arc / time.

  • @GREEDEX12345
    @GREEDEX12345 6 ปีที่แล้ว

    Slight differences in equations and usages of symbols but I came here for a review of key ideas for my AP physics class. Thanks!

  • @jbz3
    @jbz3 8 ปีที่แล้ว +6

    I'd say rotational motion has it's on spin on the rules.

  • @mattburnette7490
    @mattburnette7490 6 ปีที่แล้ว +1

    This woman is a better teacher than my physics professor

  • @viktorrds
    @viktorrds 8 ปีที่แล้ว +13

    Hearing Soccer with that accent is somehow just wrong...
    But great video as always!

    • @BullStengthTheories
      @BullStengthTheories 8 ปีที่แล้ว

      Well without offending anyone, that was by far the easiest way of differentiating the two balls.

    • @zlotnleo
      @zlotnleo 8 ปีที่แล้ว

      Well, there's an even easier method. Football and rugby ball

    • @BullStengthTheories
      @BullStengthTheories 8 ปีที่แล้ว +1

      ***** Except more than half their audience wouldn't know what a rugby ball looks like. Saying football and soccer ball works for basically their entire audience. They're not here to just please Europeans... Especially when some of the largest countries (especially in terms of TH-cam viewership) refer to it as just soccer...

    • @viktorrds
      @viktorrds 8 ปีที่แล้ว +1

      You may be right about their audience, I have no stats to question, but basically only USA, Canada, South Africa (and neighbors), Australia and Japan call it Soccer.
      Europeans, South Americans, Central Americas, México, rest of África, and Asia call it Football, so it's not to please "only the Europeans", and Rugby as gained lot of popularity, now is an Olympic Sport.
      And most important of all: the OP was a joke! Stop trying rationalize everything and wasting words for stupid reasons, and that's for the three of us!
      Excuse my poor English

    • @criskity
      @criskity 8 ปีที่แล้ว +1

      Many Irish people also say "soccer", because "football" means "Gaelic football".

  • @Teo117
    @Teo117 ปีที่แล้ว

    Fantastic! I understand

  • @Murmugallery761
    @Murmugallery761 5 ปีที่แล้ว +1

    Thanks you so much,video

  • @phamouswd
    @phamouswd 8 ปีที่แล้ว

    Wow! Just Wow!!!!!!

  • @lightspeed2014
    @lightspeed2014 4 ปีที่แล้ว

    This is so cool.

  • @stressrelief735
    @stressrelief735 7 ปีที่แล้ว

    this video helped me

  • @davidkelly3864
    @davidkelly3864 ปีที่แล้ว

    Beauty teaching physics 😮❤

  • @leosalten5707
    @leosalten5707 5 ปีที่แล้ว

    I LOVE YOUUUUUUUUU

  • @Crasho327
    @Crasho327 8 ปีที่แล้ว +1

    I would love it you, at some point, applied these principles to explain things like how a curveball works or even how they curve a soccer ball (we don't call it football here).