What Is Momentum? (joke video)
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- Опубликовано: 31 мар 2021
- My math/physics playlists:
Tensors for Beginners: • Tensors for Beginners
Tensor Calculus: • Tensor Calculus
Error Correcting Codes: • Error Correcting Codes...
Relativity: • Relativity by eigenchris
Some people in the comments are prospective physics majors and I just want to make something clear: this video is a joke/exaggeration.
Usually you spend months or years building up to the more complicated physics concepts. And a good prof should never make fun of you for getting an answer wrong. Also, while you may feel dumb at various points in university, I can guarantee your classmates will feel the exact same, so it's a journey you'll be on together.
That said, I think many engineering/physics majors (myself included) can relate to the feeling of spending hours trying to understand something, and still not fully "getting" it. It happens. That's the feeling I'm trying to make fun of here. But it's a normal part of learning and I wouldn't let it discourage you. I've made nearly 80 physics/math videos on this channel and I wouldn't have done that if I didn't enjoy physics!
+
Thank you for existing dude
its almost as if you put joke in the title. The nerve of these haters man..
I needed this.
Jokes on you we went straight to the sauce. (Jk, taking a physics graduate study with an engineering undergraduate degree is a joke) I'm the joke
The biggest joke is that there are 300 people in one class learning about the inertia tensor
This is true 😂
Why? Just a few weeks ago I was in a (digital, but normally it wouldn't be) uni lecture with about 400 ppl learning about the inertia tensor
@@davidhildebrandt7812 I'm just making fun of the fact that a lot of students don't take physics or drop out of the program quickly (at least as freshman). I know it's *possible* that there can be hundreds of students in one class that discusses the inertia tensor. The joke is that (at least I really expect) it to be very uncommon, i.e., upper div physics ain't that popular among the general college student.
@@4001Jester Well but this would be somewhere in the first semester when not so many have quit yet
Leonhard Richter I’m referring to people quitting as freshmen. Inertia tensor is first semester during (i would imagine often) third year. i doubt many people drop the major at that point, BUT i have no data ¯\_(ツ)_/¯
I have a masters in physics and I can say this is 100% accurate, I'm currently in the frictionless void myself
So did you meet Avengers. Or DC HEROES came to capture you
@@yashkrishnatery9082 no that only happens to engineers
@@yashkrishnatery9082 It was actually the Teenage Mutant Ninja Turtles for me... weird.
Ah, you're CURRENTLY in the void? Me I managed to escape. Don't worry, one day I will free my breatherin, and we will one day destroy momentum once and for-
Ah shoot, the avengers are on me, gotta go!
for me it was shaktiman and doremon....weird indeed!
This had no right being this good. The teacher’s sad eyes broke me. Brilliant story telling
well my physics teacher was the most enthusiastic one of all of the teachers
As a recent physics grad and current high school physics teacher, this resonated on levels I can't begin to explain.
Those little dummies, they never see the dark side until its too late... Muahahahaaaa
Sounds like you've lost your momentum in your learning journey.
@@fillfreakin2245bs dum tss
@@fillfreakin2245 😂😂
The jump from High School physics to undergrad and then grad school is the ultimate "Those bastards lied to me" story
lmao being someone with a degree in physics, I felt that.
And also when you first learn about complex numbers after thinking that √-1 was invalid and does not exist. Its like realizing you didn't know about an entire planet.
@@maxwellsequation4887 who told you imaginary numbers don't exist? They do exist on the complex plane. Their name is what makes people think they're not "real"
@@Thanos-hp1mwSome teachers say √-1 is invalid as a shortcut to avoid answering questions
I joined my undergraduate programme in physics few weeks late, first class i attended was on tensors. i immediately felt this line. XD
This is what it feels like when you go from popular science books to textbooks.
Lol
So true
Or from elementary school to high school.
"No Bobby, you can't take 4 from 3."
"Ms Grindlefarb _lied_ to me!"
It's not any better in the social sciences btw. In fact, it might actually be worse. Normal, everyday words become increasingly unfathomable the more theorists' musings about them you read.
Unless you are in Soviet Russia. There is a series of books there called "Physics for Everyone!". One of the books is titled "Experimental advancements in the measurements of the Universal Constants."
I love this academic humour thing. I studied computer science (defending my master's thesis tomorrow) and I felt soooo lost first semester. They were like "No programming background required", so I thought I were ahead already knowing basic programming when I started.... Then they slapped me with linear algebra, set theory, advanced logic, etc. and I realised why programming wasn't a pre-requisite. Programming is a tool for computer science; It isn't computer science itself
Computer science is no more about computers than astronomy is about telescopes.
- Edsger Dijkstra
BRUH, U REALIZED THIS NOW??????
This is how it feels for any science subject when you go to university/college. Exactly how it was for me with Maths.
Feynman: I think I can safely say nobody understands Quantum mechanics.
Eigenchris: I think I can safely say nobody understands Physics.
This is even more deeper than feynman's line about QM, here Eigen is demonstrating human's limitation against God's architecture (planned/unplanned).
@@AntiGroup you forgot to say: assuming god exists*
@@batuhankoyuncu1336 I think everyone has their own meaning to the word God, I like to use it often to represent Universe and something beyond.
@@AntiGroup, I am atheist but all I
can do is like your comment
@@truthseeker7815 I appreciate it.
I sent a letter to Dr Feynman when I was a student in a QED class. He actually answered me. I was trying to make sense of mechanism of particles attracting each other since my "physical" picture could explain how they could repel each other. What he told me applies here. All our theories are simply model for the actual universe. If the model give you a result that works, it is a good enough model to use. Therefore, if Momentum equals Mass times velocity works, use it. If not try one of the other models. This same principle applies to all our theories. It's why we can use Newton's equations most of the time and get good answers.
Agreed
What an amazing story! Do you still have your letter? Did he say anything else?
I sense bs
I now officially love you! Thank you!
@@xiupsilon876 Maybe. What I do know is that my stepfather, a physiologist living in Australia, wrote to Feynman and he received a two page letter in reply. Feynman was apparently very gracious like that.
This video got super real for a few minutes and then violently pulled me back into the joke
Reject physics, return to mathematics.
I keep coming back to this video after learning more physics and see the progress I’ve made
Eventually you will reach the "destroy the universe" stage, so be careful there.
@@eigenchris I am 300 pages deep in a book about angular momentum algebra. Like Wigner D functions, Clebsch Gordon coefficients and shit like that. Feel like i'm about to push that button any day now, my head is smoking.
@@joda7697 Sounds like Zettili ... Is it?
I do the exact same lmao
Stick with it. Eventually, you will get the real answer - 42.
Addition to the end:
Not knowing if you should use the inertia tensor or relativity or linear momentum, you treat your entire mass as a single point particle. This will surely allow you to use linear momentum and you can recapture your childhood pride. You work hard to figure out your position and measure the time change so you can find your velocity. But as soon as you figure out where you are, Heisenberg shows up and slaps you in the face.
🤣🤣🤣🤣🤣
If you remove the last line it can become the good ending.
Heisenberg be like: Yall aint measuring anything fools
Hes not a quantum particle so his momentum is not probabilistic
Man fxck Heisenberg ! 😅
"Speedy thing goes in, speedy thing comes out" -self aware killer robot
"Momentum, a function of mass and velocity, is conserved between portals. In layman's terms, speedy thing goes in, speedy thing comes out."
- GLaDOS.
Very in-character for GLaDOS to lie to you like that lol
This was a triumph.
I'm making a note here
Huge success
"Life is pointless and physics will never make sense no matter how hard you try to understand it" is my current mood.
Sorry to hear. I think all physics students have been there. There's one quote I like which says "All physics is either impossible or trivial. Physics is impossible, until you understand it, and then it is trivial." Hope things start making sense soon.
@@eigenchris Thank you. Really. I've just been watching through your tensor series. I'm trying my best to follow since it's less than a month before my exam which I'm taking for the second time. Thank you for your efforts.
Unless you treat it as a point mass, then it isn't pointless...
Alright I'll see myself out. :P
@@mcalkis5771 how is it going?
@@pepaxxxsvinka3379 It's going much better actually. My studies are actually starting to pick up pace and I'm passing my classes.
No one:
Physics: *Momentum* can be whatever I want
Entropy: hold my beer
0:22 I start to realize that something not right in this video at this moment.
2:58 Probabilities are just the square root of the 'momentum operator'. That's why there's an "i" there. The momentum operator works strictly on the plane perpendicular to the Real numbers too, hence why it's imaginary 😶.
Man, that story got depressing very quickly. The man had a teen, early-mid, mid, and late mid-life crisis and Tony just wanted a Shawarma.
What's sad is the fact that this dude never figured out momentum calculations while Tony could do it in his sleep.
@@spinyslasher6586 Tony stark was prolly laughing at him for how much of a dumb idiot he was.
I, too, want a Shwarma. Been four years since I've had one.
@@maxwellsequation4887 "When did you figure out how to calculate momentum?"
"Last night."
I mean shawarma is so good ...
You can't blame him
(I eat shawarma once every 2 weeks lol)
This is a physicist's fever dream.
Also known as a Boltzmann brain
I think this is more like a physicist's life
nightmare*
My heart goes out to all the struggling physicists currently imprisoned for life in the frictionless vacuum ❤️
Awesome story. I really loved it and had a good laugh. Please keep making such videos ❤
Tons of love.
This reminds me of one of my more embarrassing moments in undergrad. I spent hours scouring the index of my Quantum Mechanics textbook, confused why I couldn't find the word "momentum" anywhere.
And then I realized I was looking under the p's and not the m's.
pomentum
I mean p=mv
popentup
At least you gave p’s a chance.
A like for an unexpectedly funny pun.
This was actually a really good explanation of momentum and changes to it!
Okay my friend is this was amazing. I'm sure all of your physics courses are really good but I'm telling you you should have a side channel in humor. You had me all the way along just laughing and enjoying the whole thing. This is a work of art
@4:07 “destroy momentum” made me crack up so hard.
Can someone explain to me what momentum is?
evil
p= int(F)*dt
I once thought about this while being in high school (currently a Physics major) that momentum is a clever combination of mass and velocity that gives you an idea about the impact when two bodies collide.
Well you were true that momentum is generalised to a very complex level in current theories of Physics but foundationally there is no meaning to momentum if we are studying just a single particle. When two or more particles interact, they do require some kind of a defining quantity that has information about their respective inertia and the motion they have.
Momentum is trying to give you an information about how much mass changes its position in unit time.
Still my explanation lacks the clarity it should.... Lets try a bit more and figure it out.
mass times velocity!
Newton referred to it as the "quantity of motion". A measure of how much motion or movement occurs.
It increases with mass because more matter preformes movement and increases with velocity since the same mass literally moves more 😁
That's how I think of it intuitively.
0:36 the stache 💀
🙋🏻🙋🏻
Yoooo 😂😂😂
I laughed so hard at this. Thank you for the comedy break!
3:24 I felt that picture.
When asked such a question, I reply "Do you want the short answer, the long answer, or the 3-trimestrial course?"
we just started our impulse and momentum unit earlier today. what a scare. thank you for the lesson and the laughs!
4:29 is seriously a vibe.
10/10 best video i've seen in days.
baia baia
@@memo26169 xD
Yeah but i don't know why
I have never related to a video so much as this one. But seeing how good you are at your videos gives me the motivation to grind through the absurdities of physics, even if I've lost hope of understanding it really well as I thought I did in school.
I'm glad you like my stuff. Most of the "insights" in my videos didn't come to me from grinding through homework problems. It's mostly lots and lots of googling, searching for the best possible explanations, and spending lots of time thinking about how to make things simple. It's definitely not the way school is set up.
@@eigenchris Yeah, it isn't, which is infuriating tbh. They want students to get good grades and learn and yet teach in the worst possible way I can think of. Especially mathematics, instead of giving a problem and then solving it and then generalising, it's in reverse, first a theorem out of nowhere, then a boring proof and FINALLY the example, which is the most important part. The species that was smart enough to discover ways of mathematically describing general relativity and quantum mechanics is the same species stupid enough to not be able to create a good, adaptable education system.
@@momchi98 Yeah, exactly. To me, it seems like a definition should be something you introduce after 20-30 minutes of giving examples and motivation... otherwise you have no idea why the definition matters. The math/physics RUclipsr Tibees did a video called "A Mathematician's Lament" where she talks about this problem. She quotes an essay that says the problem with math education is that "questions are asked and answered at the same time". I find the definition/theorem/proof style of exposition unreadable a lot of the time.
@@eigenchris I think physics Professors should read your comments and I hope they will not search the secret universe destroying buttom afterwords.
@@eigenchris so the anger to destroy momentum gave rise to the momentum that became Eigenchris and certainly a motivation for thousands, many of whom will spread your legacy in the future...
I'm so glad this video found me. Struggling through my PhD in mechanical engineering right now, ans the amount of times someone has said "well actually, its more like this..." to me is unbelievable.
I never knew this could be so realistically motivationg
4:50 best part
"Anyway, the Avengers beat you up" 😂😂
This video is going to blow up one day and I am all up for it
This actually made me sadder than I already am
The first half is my worst nightmare, as someone starting a physics major this fall.
This video is an exaggeration. Usually you work up to these concepts slowly, over the course of months or years. And a good prof should never make fun of you for getting an answer wrong. But the feeling of not knowing what momentum is anymore after finishing a physics degree is kinda true, at least for me (particularly in quantum). I hope you enjoy your major and have fun, even if it will be confusing sometimes!
To add: you will most likely feel extremely stupid compared to the rest at some points. But so will most of the rest. So don't stress it ;)
@@eigenchris but aren't they all just theories getting better as time passes?
@@maxwellsequation4887 Yes, but the theories are increasingly more mathematically abstract and get separated away from your normal intuitions about the usual flat 3 dimensional space with objects obeying newtons laws.
Let the many problemsets guide you as you build the intuition that will carry you through this degree.
For me, momentum is the conservation quantity that follows from space translation invariance. The thing with the inertia tensor is not momentum but angular momentum and this is the conversation quantity that follows from rotational transformation invariance. One should grasp the Noether theorem as a fundamental theorem of physics that defines plenty of quantities.
i largely agree, but there's a subtle problem with this: what if momentum isn't conserved? how should we define it then?
@@bayleev7494
Well, if you assume that certain symmetries occur in a system you can derive expressions for conserved quantities (according to Noether). No one prevents you from calculating these expressions if the symmetries no longer hold true.
Let's take a look at an example.
Let's say we have a simple mechanical one particle system that obeys the laws of Newton.
The whole system can be described by finding a proper Lagrangian L that depends on the position and velocity of the particle at all times.
Let's assume the system is time translation invariant. It follows the following conserved quantity according to Noether.
E=dL/dv*v-L
where v is the velocity of the particle.
This quantity we call energy.
Now you can let act a time-dependent field on the particle. In that case the symmetrie hold no longer true (and energy is no longer conserved) but you can still calculate the expression dL/dv*v-L and say that this is the energy of the system at any given time as long as you know the Lagrangian L of the system.
Does it make clear?
I feel your pain. I remember when I had an assignment due the next morning and needed to calculate some line integrals, but I had absolutely no idea how to do that or what that even meant. This feeling of being too stupid built up the whole semester prior until it reached this "grand finale" the moment I failed the very first assignment of the semester. I was honestly just devastated that it had come to this. Maybe I shouldn't have, but I quit right then and there and never visited another lecture. Sounds kind of irrational when I explain it like that, but believe me when I say I never felt so stupid in my entire life.
I'm in electrical engineering now and I feel a lot better, but videos like this help me get over this horrible experience still lingering in the back of my mind.
We all experience hardship. We are not too stupid, no one is. And when we feel like we failed, we should get back up, brush the dust off our shoulders and try again, because that's all we can do.
I'm a MSc Physics student. After all these studies i don't what I studied ??🙄😑
And then you started a youtube channel 😂😂
@@aniketyadav7993 a DIY channel
Please do not the cat.
Does it rhyme with Harmonic Oscillator?
Sathyam
I discovered your Tensor for Beginners series googling what a Tensor is, and I end up studying special relativity, hypnotised by your reasoning. I want to point that you only require from your audience basic matrix multiplication.
I think this is the first time in my life that I have met a living genius.
Captain America giving me a motivational speech but then getting me arrested anyways was *very* heartbreaking. Not to mention the fact that Tony could have just chosen to explain momentum to me instead of eating shawarma after throwing me into a frictionless vacuum chamber (I feel like he specifically designed that too)
1:31 in our country's highschool you actually do this.
But none of these inertia tensor crap, you just memorize the moment of inertia formulas for a bunch of shapes like sphere, cylinder, rod etc.
"Inertia tensor crap"
Dude, its a university class , the stuff is way beyond highschool coverage
@@unnikrishnanvr186 yeah I know.
I didn't mean to imply that our highschools were in a higher level, just that we did a simpler version of it, in university you learn the derivation of those formulas and much much more
@@unnikrishnanvr186we have it in India too. It's not this much higher level tho
...I did not ask to be personally attacked on a Good Friday. *curls up into a ball and cries*
You mad man, that is the funniest thing i ever see in the whole damn week. Really nice video. Love your series on relativity btw
A work of art!
In India we learn this stuff in high school to crack exams like Jee, Neet, Cet, etc. I can feel your pain bro
This education system is killing my curiosity. I am not the same kid as I used to be when I was a child. I was always curious to know how things worked and I used to learn them with interest. But bow as I am in grade 11th I have a pressure of clearing Jee advanced and get into an IIT or other good college to become a robot 🤖 and work in an boring company.
Dude I feel you. I don't know if it would help but there is a RUclips channel called flipping physics which has a jee playlist. He helps more visually to get the idea but if you ask me, momentum is some kind of impact or smth
you kids are studying momentum vectors and tensors for jee adv?
wasn't it difficult questions based on high school concepts only?
Dude I felt that...I really felt that. Studying physics has been the most humbling thing.
Your explanation and your efforts on your courses are outstanding, all respect to you bro, Thank you
I'm eternally bouncing in a void with perfectly elastic collision.
What's great is that joke is the momentum continues to give you dub after dub
Dude!! Never stop making these!
I subbed to your channel because of your tensor series and getting this was a surprise I never knew I wanted so badly!
I feel like this a lot. I remember when gravitational waves were first discovered. In excitement I rushed to wikipedia and quickly found the GW page. Eagerly, I read the first paragraph. There were 11 words with links. I didn't know what any of them meant. I just had to laugh so that I wouldn't cry.
Thanks for doing what you do to make the world a little less inscrutable. I'm looking forward to your Tensor playlists. I've gotta build up the maths first though. Cheers!
Lovely video!
“which has the square root of negative 1 in it for some reason”
most accurate words ever spoken
My entire life of studying physics just flashed before my eyes 🤣.
This is the most depressing April Fool's Day post EVER. But thanks for posting this. Will convince a lot of people that instead of Physics, you should major in Math!
watch his last april fool's video ruclips.net/video/aewo8otGAAQ/видео.html&ab_channel=eigenchris
Bruh
that is absolutely hilarious, witty, original, surprising!
Now I understand what's wrong. I'm in a frictionless vacuum.
Supposedly a joke video, yet I found this to be one of the most informative and educational physics videos I've ever seen.
Very condensed way to present a lot of ideas. Excellent work.
This is accurate. High school only teaches us about magnitudes and gives no context to what velocity and acceleration are. Later you learn about Multivariable Calculus and that velocity is dr/dt, where r is a vector. Acceleration is d^2r/dt^2. That is when it makes sense. The reason why high school never gives context to acceleration and velocity is to hide the hard truth.
I don't think they are intentionally trying to hide the truth. They are just presenting a limited scope of the truth, at a level that is reasonable for a class of high school students to understand. And not having the background of calculus available, really limits the amount you can teach at a high school level, as you are limited to the special case of constant acceleration.
For the same reason that a elementary school teacher tells you that you can't subtract 3 from 2. I think most teachers of any grade level know about negative numbers, and would tell you about them if you asked about them outside of class. It's just not relevant to the scope of the class they are trying to teach, and you are far beyond the intended lesson that you'll just end up confusing yourself and others, if you insist on introducing negative numbers before you master subtraction in the purely positive case.
Not at jee advance level
@@carultch Wait what? In my high school, you learned calculus in physics class because you needed it, and the calculus class was still trying to teach limits, and only gave up and taught calculus later on.
@@psychohist I can't speak for every high school. This is based on my experience. Your experience may be different.
Calculus is usually a senior-level subject in high school, or a college subject, so if you're trying to teach a physics class much earlier than that, you'll have to abridge it to work with the background the students likely have.
You certainly aren't learning detailed techniques of integration, like parts and partial fractions, to cover the basics. At most, you might learn a limited scope of calculus for the topic at hand. Such as the power rule, which I think most students can handle with just an algebra background. Easier to learn the power rule, than to memorize the formulas that came from it.
Brilliant!
This video actually makes a good point about how physics is taught. A subject like math is built from the ground up with a rigorous framework, but physicists just write formulas without proper definitions and have an expectation that no one will actually understand anything. Someone famous said "No one really understands quantum mechanics." Can you imagine saying that about any math field? "No one really understands number theory." "No one really understands algebraic geometry." No, that would be ridiculous, since these are fields that are built in a rigorous framework with proper definitions, and the people who study them actually understand them.
As far as I know, standard quantum mechanics (not venturing into quantum field theory) does have a rigorous formulation. The confusing stuff comes more from the physics, like entanglement and probabilistic measurements.
Never watched anything this relatable in my entire life 😭
Man, I think I laughed a little bit too hard on this one 😂.
I saw this somewhere else and I had to immediately come and subscribe. This is just so accurate, I’m in tears .
The best line was " she knew " 😂😂
“And you stand proudly, for you are strong”
fantastic!
Eigenchris this was amazing! I hope to survive in my general physics class next week which is unlikely because I´m in a way to early phase of my studys. But with your channel I still have a chance!! Greetings from Germany.
The best part about it is that no one explained that they are the same thing!!
P=mv applies in relativity under Lorentz transforms
Iw=L is kinda like adding up all instantaneous momentum’s…so adding up lots of little p=mv’s
And quantum physics…well…that’s another story haha
But in Lagrangian mechanics the Lagrangian is defined in terms of potentials, of which the time derivative can be thought of as like a change in force ie change in momentum
Boom…it all makes sense. All you need is p=mv
Might’ve explained Lagrangian wrong but oh well I’m just as confused as the next guy idk how I made it this far
PhD at NASA=PEOPLE HAVING DELUSIONS, NEVER A STRAIGHT ANSWER!
I was expecting at some point that momentum was the integral of force. But you quickly jumped beyond my personal understanding.
isn't work the integral of force?
@@reckie1000 no, work is the integral of force TIMES VELOCITY. And Steven's right, since (as long as mass is constant), F = ma = mdv/dt = d(mv)/dt = dp/dt, so p = Integral of F dt.
@@reckie1000 Depends on what the variable of integration is. When the variable of integration is position, that's work. When the variable of integration is time, that is impulse, and impulse becomes a change in momentum.
Time and distance are the same at the end of the day, so whats the difference really?
@@deltalima6703 One difference is the units. Time and distance might have the same units in Planck units, but not in the units familiar to us.
Another difference is that the variable of integration for work, needs to consider all possible directions in space, and so it is really a dot product line integral, rather than a simple integral relative to the variable of integration.
For integrating relative to time, the direction is implied to be in the axis of the dimension of time, no matter what, and forces are never directed in that direction. You can think of impulse as a hidden cross product, because it is a multiplication of two vectors that are guaranteed to be perpendicular. Though you don't need to think about cross products, because time is ordinarily treated as a scalar.
Perhaps there is a unification of work and impulse in general relativity that makes use of the generalized 4-velocity and tensor calculus, but I haven't explored it.
I loved the quantum mechanics teacher. By the way did you gave him a Leonard Susskind look or was it just me relating stick figures to real teachers!😂
That actually explained the Inertia tensor. Nice!
that "she knew" part had me absolutely dying 💀💀
So funny. Thanks!
Based on many true stories!!! Lol, that was so funny, and still being in high school I learned about momentum only this year (12), and I cannot believe after 12 years in school I'm nowhere career-wise and knowledge-wise on any topic... The worst is the time pressure for sure...
Well you've now got the foundations, and should be able to add any skyscrapers of focused knowledge you could need for the future career(s) you'll decide to embark on.
Lol, pull the other one...
I'm glad I'm not alone
Man I love it, I never laughed like this for weeks.
This video made me laugh several times haha. While somewhat dark, this video reminds me of when I got my B.S.E. in Engineering Physics and now getting my PhD in Biomedical Engineering (though my work focuses on continuum mechanics of soft tissues and I continue to learn advanced E&M, QM, and GR on my own). There's always a more generalized definition lol. Really well done
As an engineering student I can relate to this so much
This happened to me when I started to learn physics for national olympiads in high school. I failed to learned the university physics level at that time but fortunately few books helped me to get a better understanding that I am not afraid of the advance formula in physics.
But a similar situation in this video happened when I went to medical school. Our lecturer expect us to have a "expert clinician" way of thinking about diseases, while we were just started the basic anatomy and physhiology related to the disease. For many years, I struggled to get a better understanding, and even today (after graduated some time ago) I feel that I could not really get a proper understanding of many things in my field.
I hope that we have a better education system to make students get a real and practical understanding that delivered in a more "humane way"
God DAMN you can hear the sadness in his voice in the last part lol-
I got my bachelor’s degree in Physics with flying colors. I still rely on the solution manual whenever my juniors ask help for their problem sets. Plus, I’m in a constant love-hate relationship with Physics. 🤣
Bro really became a supervillain because he couldn't understand calculus of variations...
In the perfectly elastic case I’d probably go for the statistical mechanical definition of momentum derived from the “random walk” idea leading to the ideal gas law, in fact that’s exactly how Boltzmann came up with the idea for it
I haven't yet gone to the uni, still in A/Ls so am lucky to find out this beforehand.
It gets even worse when mixing languages... My first language uses impuls for momentum, but still says moment(um) to torque. And then angular momentum is 'impulsmoment'. -_-
Its common terminology everywhere outside the anglosphere. Angular momentum = moment of impulse. etc etc
@@mikhailmikhailov8781 In Spanish it's just a literal translation of the English terms.
Angular momentum - momento angular
Linear momentum - momento lineal
But
Moment of inertia - momento de inercia
Moment of force - momento de fuerza
Spanish language Wikipedia uses the terms "cantidad de movimiento" (quantity of movement) and "ímpetu" (impetus) as synonyms for momentum, even though I've never seen those terms in Physics textbooks.
This precisely picks up unpreciseness of some terms we use. Excellent course, hope the momentum of this video series takes me through the wonderland of physics.
Man this is great 👍
I showed this to my high school physics teacher, she began crying.
This was not a joke really. You brought out the confusion in Physics wonderfully. If you think about it, most of the ideas presented to us in high-school and college (and beyond) is sort of doled out by an authority. So p = m*v is just a formula to be memorized and you don't get to question why is the product of mass and velocity a special quantity? You have to just follow (or else you are a bad student of science, and will be dropped from further science education). Even Einstein did not have a clear understanding (nor does anybody else) as to why "inertial mass" (which features in Newtons law F = m*a) is identical to gravitational mass (which features in weight = m * g), so he simply put it as an axiom in his general theory of relativity. Ask even those scientists working at CERN - "what is mass?" and even they will look confused. Our science education is really very shaky and indulges in a belief system. We hope this changes, hopefully soon.