Vectors and 2D Motion: Crash Course Physics #4
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- Опубликовано: 20 апр 2016
- Continuing in our journey of understanding motion, direction, and velocity... today, Shini introduces the ideas of vectors and scalars so we can better understand how to figure out motion in 2 dimensions. But what does that have to do with baseball? Or two baseballs?
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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!
+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.
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.
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
They especially need to breath
I think that someone studying kinematics would not need the middle steps.
Will CrashCourse videos ever feature breathing?
crash course biology
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.
+Rune Warhuus I know.. it was a joke
+damnage97 :-p
Pause the video or play it at a lower speed.
Watching this at 12:15 am, I have a physics midterm in 7 hours pray for me
5 Secønds øf Fall Øut Chemical at the Discø! Same here...
a year later, an I'm about to take my physics midterm tomorrow... 12 hrs to go
@@b0unce805 9 months later, I have an exam in 12 hrs
@@Zanewms 3 weeks later, I have an exam in 12 min
@@celeryystick 3 months later, I'm currently taking my exam
The most important question is: Will that rubix cube on the desk be solved before the end of this series?
+Physics Videos by Eugene Khutoryansky I love your videos!
+Physics Videos by Eugene Khutoryansky prrrrrrrrrrobably not. But, we can all hope, right?
-Nick J.
+CrashCourse get a professional
+Physics Videos by Eugene Khutoryansky i'll teach her
+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!
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.
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.
PHYSICS IS EASY
WHEN TEACHER IS PERFECT.
I hope that there is another mathematic crash course series that can work as a prequel to this one...
+josh mcgee yes ;D
+josh mcgee That's maths you learn at the beginning of secondary school normaly.
+halveiz you need all of calculus to truly understand physics. Calculus' sole purpose was to do physics you know
@GoldenApple Mind = Blown.... MY WHOLE LIFE'S BEEN A LIE! THAT'S NEARLY SAYING ALL THE MATH WE'VE LEARNED IS SOLELY FOR PHYSICS
Crash course physics. The only series I can watch 3 time in a row and still scratch my head about.
me: this is 2D, let me go find something 3D
Her: Harry Styles
me: alright, I guess I need to review 2D (:
sohcahtoa saved my life in highschool.
Truth.
yup
Ron Walsh ikr so useful
Ron Walsh I don't do AP maths... could someone plz explain it bc I'm taking physics
Katherine Pierce Bad idea. Math and physics are married.
when you need more than one direction you turn to vectors.
best advice ever
Vector! Committing crimes with both direction and magnitude!!!
+Natalie McCarthy I FINALLY GET IT!!!!!!!!!!!!!!!!
I THOUGHT OF THIS JUST NOW! I FINALLY GRASP WTH VECTOR MEANT WHEN HE SAID THAT IN DESPICABLE ME!
OH YEAHHH
27th!!!!
hi
😂that's amazing
Good job!
Will this course go all the way till quantum theory?
+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.
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.
Just tryna study and she brings up harry styles 😭♥️
Female engineers (and engineering students 😉) out here representing in Crash Course Physics!! Dr. Shini's passion is so contagious!
The amount of sheer delight I feel having this explained to me in a way I understand is unreal.
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.
I have a test on this tomorrow :D
I'm loving this series so weird to get nostalgic about things like vectors or integrals. good for reviewing things too
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!! :)♥️
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!
ONE DIRECTION REFERENCE.....OMG..I LOVE THIS ALREADY!!
hoping that there are a lot more of these before the AP physics C test!
+Nick Jarvis Every Thursday (barring some holidays) for the next year :)
-Nick J.
+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!
+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.
+Nick Jarvis we're barely into AP Physics AB, it's gonna be a long way bud
+Glenn Edwards thanks for the tip it looks like a useful channel. :)
This series is going to help me soo much in a few years
How old are you? 12?
Artur Mizuno 14
Tundra1232 then, yes it will, a lot. NERDPOWER
Ummm... I am 12 🤓
+Tundra1232 Haha I like how you think, it's always great to stay ahead of the game.
Im a 1st year programmer, this really helped me understand how vectors works on a 2d platform. thanks!
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.
I'm studying for the MCAT, and my Physics are so rusty this series is so helpful.
I love this whole channel, but these are really great. Please do more physics videos!
SO HELPFUL for big concepts on the MCAT! thank you so much!!!!
I love this channel and the presenter is awesome! I really hope i get to see more from her in the future!
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 😂😂
Great video, so much information i learned! Keep em coming
I list crash course as my tutor source on my college questionnaire. This has helped a ton thank you.
I honestly learnt so much from these videos than all my hours in lecture combined!! Thank you !!
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?
These are great videos. Very engaging. Well done CrashCourse et al..
I've watched this video just to practice my English and I ended up took an exelent Phisics class.
Tks!!!
Great video, I'm definitely looking forward to the next one :-)
Love you guys!!!-A great job as usual
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.
Excellent Explanation! Thank you very much!!
nice video , it cleared doubts about vertical and horizontal components of vectors
Nice for a quick refresher course. Keep up the physics, my brain thanks you.
Thank you for sharing this.
OH MY GAH! Thank you very much! when you explained it seems so easy. You are great!
Such a great video, thank you!
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.
These were always my favorite problems to solve back in physics :)
this does refresh my memory a lot!!!
Thanks for the video! :) Really helps!
Nice video. It really helps.
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
2 hours worth of lectures in 10 minutes... not bad
It's funny, I had my first lesson on Vectors today. This should come in handy for revision, thanks!
Go Triangles! Vihart is proud!
XD
Candy corn triangles made of candy corn triangles made of candy corn triangles made of candy corn colonels
+Demellovlogs And vectors! As a game programmer (especially graphics stuff), I use both constantly :)
dab
Dinonid123 illuminati confirmed
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!
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.
Yayyyyyy finally! Been waiting for this :D
This is gonna be the savior of my AP Physics 1 exam grade
Yay vectors. I remember studying them in my physics class almost 10 years ago. Wow, I'm old.
Shini, you are amazing! :*
Can't unsee the 'Big Eyed Hanklerfish' on the left.
I FINALLY UNDERSTAND HOW TO DERIVE THOSE TWO KINEMATICS EQUATIONS! THANK YOU BASED CRASHCOURSE!
I may have to watch this multiple times and take some notes haha
thanks so much!! I finally get vectors after like six months!!
Good stuff. Am utilizing this to better understand Physics and my study of Astronomy/ Cosmology. Also questioned the 2 balls hitting the same ground and remember testing this with throwing and dropping a tennis balls out of an elevated window at the same time (makes it easier to see/ hear them hit as same time) Think the key is that the thrown ball has to be thrown at from the same height as the ball you drop simultaneous with it. If you throw the ball up in any way/ or down, you change this and the balls would not hit at same time. This would explain why we can ignore the horizontal motion/ velocity etc and gravity constant would be only thing that would be acting on the balls (in a vacuum)
Wonder how this in a simplistic way would explain objects moving at a high speed (near speed of light) or "falling" in orbit around curved space time around planets, suns etc and even the effect on time, but that is another lesson, and I need to brush up on my Newtonian physics first hahaha.
I'm really digging how interactive Crash Course is getting with the comments in this series.
simple topic made complex
Justin Taylor I fail to see the relation between what I said and what you responded to what I just said.
+Fallenshadowv3 I agree with you i don't get his point either XD
watching it in 2017. You make Physics fun!!!
Thanks for the video
Who else noticed harold cycling away on the table at 0:02?
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.
When I return to college, you're gonna be the real MVPs.
thanks a lot......i have a test tomorrow, crash course saved my day!!!
Love physics already. Started loving it at 0:11
thank you so much do finally doing physics
Vectors are my favorite!
I believe every science learner should watch this video before tackling projectile motion/ Kinematics ..
This was really helpful , thanks !
I'm sorry, I can't concentrate on the girl with all this beautiful physics...
+Daniel Dogeanu good, you'll need that kind of distraction. That's the right kind of distraction
I’m sorry I can’t concentrate on the video after seeing a comment from this handsome boy
LMAOO
Thanks for helping me with my homework👍👍😁
These are my uni classes resumed in a video right here.
Vector! The evil supervillan from despicable me
And in marvel comics.
crash course, you blow my mind
There's litterally nothing I could find online about vectors, but this makes it pretty simple.
This saved my Physics mark thank you so much 😃
very nice! thank you!
thank you so much
Oh my god, awesome reference to The Witness you guys... Bravo!
When Shini starts talking about vecors and how to add/subtract them, isn't it very similar to graphing complex numbers with I = Re and J = Im? (and the direction is the argument)
Wish I had such teachers!
thank you so much!!
AMAZING !!! Thanks :)
Good job.
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.
When you have magnitude and direction. You just got vectored!
Nothing can ever be simple. That's what makes it fun.
That moment when you're watching this in panic mode before a test
This series is really starting to hit its stride.