Conservation of Momentum In Two Dimensions - 2D Elastic & Inelastic Collisions - Physics Problems

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This physics video tutorial explains how to solve conservation of momentum in two dimension physics problems. The total momentum in the x direction and in the y direction must be conserved separately. Inelastic Collisions occur when momentum is conserved when kinetic energy is not conserved especially in the case when two objects stick together after a collision. Elastic collisions occur when both momentum and kinetic energy are conserved. Objects bouncing off each other usually occur during an elastic collision.
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Conservation of Momentum:
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Rocket Propulsion:
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What Really Is a Force?
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Inelastic Collisions:
• Inelastic Collision Ph...
______________________________
Impulse Momentum Theorem:
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Force-Time Graphs:
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Ballistic Pendulum Problem:
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Elastic Collisions:
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Impulse & Momentum Test Review:
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_____________________________
Center of Mass Problems:
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Center of Mass - Calculus:
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Intro to Rotational Motion:
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Full-Length Videos and Worksheets:
/ collections
Physics PDF Worksheets:
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6 сен 2024

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@TheOrganicChemistryTutor Год назад

Physics PDF Worksheets: www.video-tutor.net/physics-basic-introduction.html Full-Length Videos & Exams: www.patreon.com/MathScienceTutor/collections Impulse & Momentum Practice Test - 47 Problems: bit.ly/3Qj9FjO Next Video: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-FfaEbqmvKQA.html

@adelgamer1684 Год назад

Hi. I have a really important question about this video and I would be really grateful if someone could help me! From what I know, when a ball hits a ball with the condition that the vector of the collision is pointing from the center of the first ball to the center of the second one, than the direction if the ball, which is being hit, would be the same as the direction of first ball, because as mentioned, it is a “center to center” collision. So I come to the conclusion that the case that is described in this video is possible, if the collision vector is not pointing at center of the second ball and so, we get different angles of the 2 balls, telling us the exact direction of each one. Am I missing something, or did I catch this right. 2. Question (I am really sorry😅) If we have a different scenario, where you have to calculate the angles of the 2 balls after the collision, do the speed of the balls after the collision have to be constant? For example in air-hockey, the speeds are not constant because of low friction. So do I necessarily get different angles based on inconstant speeds? This is important for a project, so it really would help a lot if someone would help me…Thanks to you all!

@jasonmaxwell9580 5 лет назад

Pretty sure I'm gonna have to scribble in "Brought to you by the Organic Chemistry Tutor" somewhere on my degree.

@school_pizza 4 года назад

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@yashpatel5321 2 года назад

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@school_pizza 2 года назад

@mustafa idris Some of the 4th year classes were too much for me without a tutor and I told my advisor I wasn't going to put in the time with them

@MoMorelife 4 года назад

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@ThatWasherNerd 4 года назад

Mo Mo nice

@triunnbjorn3610 4 года назад

Dude got me Through Chemistry 1 and 2, Biology 1, a multitude of algebra classes, and now Physics.

@nicholaslowell9823 8 месяцев назад

How did you do on ur midterm from 4 years ago?

@MoMorelife 8 месяцев назад

@@nicholaslowell9823 not too hot but I passed the course! good luck to you!

@libanfarah9142 8 месяцев назад

Sam question in mind loll

@2000camarena 4 года назад

Your ability to explain concepts in such a simple manner never ceases to amaze me, keep up the great work!

@dennisafrifahboateng9908 4 года назад

Luan Do he’s really good

@reynolddlm 6 лет назад

Out of all collisions video tutorials, this made me see the light.

@ZAsym 3 года назад

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@_empty_4945 2 года назад

So true. This dudes got chem, bio, physics, math, and even financial stuff on his channel.

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@ZAsym 2 года назад

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@Human-san 7 месяцев назад

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@aname-kg3cb Месяц назад

@@hentai6582 that is beyond his rizzics

@LJ-ml7oz 5 лет назад

my teacher taught this for 1 hr and i dont understand shit. im 2min in right now and everything is cleared. thanks dude!

@ahmeddraza 6 месяцев назад

No matter how old your videos are, they always help. I wouldn't have passed many exams without you

@cameroneinstein546 2 года назад

Your explanation in physics, chemistry and maths are so good that even my teachers requests us to watch your videos.

@gabrielpetta3001 3 года назад

This exact video saved my physics lab, no other examples I could find had two unknowns. Thank you so much!

@TM-tj7ou 4 года назад

ive been having trouble with 2d momentum for so long but now its a lot clearer.......thanks a bunch!

@Addicted-A1 3 месяца назад

I'm having my end sem in 9hrs and this is the only channel I can rely on

@mbrentharris 4 месяца назад

You are probably one of the most brilliant of persons, that I have watched on RU-vid. Thank you for your videos, I have learnt a lot!

@kumudupremarathne1453 5 лет назад

I've watched many of ur videos related to physics. When I am cramming in the last minutes before the exam ur explanations are vital.I am really thankful ur lit af. IF U R LOOKING UP IN THE COMMENT SECTION BEFORE WATCHING THE VIDEO..TRUST ME THIS IS WORTH SPENDING UR TIME.. 👍 this comment if u think it's true

@giftmaimba4417 2 года назад

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@matthewcochran94 3 года назад

You literally explain this so much better than my professor

@mbrentharris 4 месяца назад

Incredible mind, who explains work with such great ease!

@connorking1386 5 месяцев назад

Hello I have loved your videos ever since I was a little undergrad. I did notice if you take your final velocities and plug them into the kinetic energy formula, energy is gained. Could you explain this?

@spaghettilicious2250 2 года назад

Bro im in college and my class is all online and the teaching style is dog water. Im litteraly learning it all from you.

@leechimfwembe 5 лет назад

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@user-tr5wx2bv5u 8 месяцев назад

love you man , loved your video thank you so much , may GOD bless you dude

@asrithkatragadda6891 3 года назад

goat himself saving millions, the hero of all high schoolers

@nun-much343 3 года назад

EXACTLY MY TEACHER DOES NOT KNOW HOW TO EXPLAIN SHIT ITS SO ANNOYING

@chaeairsoft 4 года назад

what if they do not give you an angle for the 3kg ball at rest, only for the initial ball?

@blazar5701 3 года назад

I am a 6th grader, and I am learning about physical science. This actually makes so much sense, its like a solved puzzle.

@moonbunnies5216 3 года назад

You learn this at your 6th grade????! This is in my diploma course what country are you from omg

@blazar5701 3 года назад

Lol, yeah, I am in US, we were learning about basic motion in physics but I wanted to go a bit further in depth so I could understand everything that was taught, and also for extra knowledge in the future. But I'm sure this type of physics is taught throughout highschool and college, something that is very important so it is repeated.

@moonbunnies5216 3 года назад

@@blazar5701 damn that mindset of yours will bring you to places in the future. I wish I was as dedicated as you back in the days. Keep it up, I'm sure you will achieve great things in the future :))

@blazar5701 3 года назад

Thanks man, hopefully!

@paulsabatino625 2 года назад

Very clear explanation, but I do see a problem with your example. You show the balls moving at right angles to each other after the collision. This is not possible when the masses are unequal. If you calculate the kinetic energy before and after the collision, you'll find that the kinetic energy is greater after the collision. This is impossible, even for an inelastic collision.

@PedroLopez-jv2yv 2 года назад

No one seems to have pointed this out. There's more energy after than before.

@Thelast_timetraveler 10 месяцев назад

You are mad intelligent!!! You know physics, chemistry and maths!?!? Sheesh!!!

@ahanagarwal6547 Месяц назад

Hi my exam is in 30 mins I did not know this was in the syllabus thank you 🙏

@adelgamer1684 Год назад

@edde7833 3 года назад

I swear if he was my physics prof I would attend all of his lectures

@SAVIORPAF 2 года назад

Faxx

@gprofisfreddymul 4 года назад

How do you calculate the collision number? Why are the results negative? Please explain.

@jasstan180 4 года назад

What if it’s the other way around. And you’re looking for the angle and final Velocity? Only. I’m talking about an inelastic collision where they stick together in the end. I don’t know if this makes sense to anybody

@MrGallinavoladora Год назад

This is just what I was looking for! Thank you so much!!!!

@hopeworld4247 4 года назад

If you don't mind senpai, can you make another video about collision in 2D? I want to practice solving more 🥺

@kangmingu7995 4 года назад

This helped me soo much on my physics ap test thank u

@TroubleWoe 5 лет назад

It’s not -30 degrees for the x component for v1. Its moving to the right so it should be 30 degrees positive

@granthqweqw5244 5 лет назад

It is moving down though so It would be -30° if we think of it like we do in the video

@subhan12340 5 лет назад

Cos(-x) =Cosx so it doesn't matter anyway

@jimhahn2665 2 года назад

There's a clear error in the derivation. Look at KE before and after. KE before = (1/2) * 5 * 6^2 = 90 KE after = (1/2)*5*(5.2)^2 + (1/2)*3*5^2 = 67.6 + 37.5 = 105.1 KE cannot be greater! Also, a commenter said that the degree total was 90 and that could not be, because the masses were not equal. Well, I don't think so. If the angles total to 90, then the collision is elastic irrespective of the masses.

@jimhahn2665 2 года назад

I was wrong, and therein lies the problem. The angles total 90 ONLY if the masses are equal. These masses are not equal so therefore the angle total cannot be 90. So the problem is overspecified. The only way to solve it is to put extra KE in, which is kinda illegal. No? Cos(theta+tau) = (v2/2*v1) * (m1^2 - m2^2)/(m1*m1) The classic elastic m1=m2 case results in cos(theta+tau) = 0 which requires theta+tau = 90degrees.

@daveschorrtube 7 месяцев назад

Yeah, he shouldn't have said that the collision was elastic.

@zakiya7894 7 месяцев назад

i actually love u omg im watching this 2 mins before my final 😭

@dominicpakula7813 2 года назад

What if you are only given one angle and one speed vector? This doesn't work in that case

@dragcraftmaster7 Год назад

Super well explained thank you

@ThatWasherNerd 4 года назад

5:37 Someone is angry behind the wheel

@gartyqam 3 года назад

i dont get it. how is he angry

@ThatWasherNerd 3 года назад

@@gartyqam If you listen carefully, you can hear a long horn honk

@gartyqam 3 года назад

@@ThatWasherNerd oh i didnt even realize dat haha until i listen VERY CLOSELY D:

@dhanalakshmik2226 3 года назад

@@gartyqam so u listened on the horn not on the lecture lmaoo😂🤣

@Lortagreb 5 лет назад

Perfect thanks. Great as always.

@cristondingding1038 2 года назад

Thank you for the tutorial. Hope for more:))

@sugar4936 6 лет назад

so where is the inelastic collision problem at?

@mindwipe0074 5 лет назад

I know u prob dont care anymore but if the problem states that its an inelastic collision do this and if its an elastic collision then u can do this too but u should just keep in mind that the kinetic energy is conserved, just in case ur teacher decides he wants to make his student's lives more miserable and gives u another variable to solve. KEi = KEf

@Ishaan35 3 года назад

Elastic : kinetic energy and momentum conserved Inelastic: Only momentum is conserved

@andrewmartinelli1844 3 года назад

we know no king but the organic chemistry tutor

@exodus58 3 года назад

the final speed in x and y direction must be different for momentum to be conserved?

@coreyb8080 3 года назад

Im in 5th grade and really benefitted from this video! Maybe some more challenging problems would be better however I solved this faster than I pressed start to the video.

@WyattXD 2 года назад

damn bro

@studyingd5565 Год назад

3:30, in here if we write 30 degrees above the x axis is it cos 30?

@ExcitedGiraffes-zt1qc 4 месяца назад

You are a king

@rganaiktasl9482 2 года назад

Very well explanatory.. love it... soli kela❣❤✍✍

@LS-17 11 месяцев назад

Bro you are the goat man. Thank you so much!

@MariePeters11 10 месяцев назад

Amazing video, Sir! However, I have a question @5:24: Shouldn't V1y' = -V1*sin(-30deg)? I thought we also have to carry the sign of the direction of the component. Thank you in advance :)

@vm8856 9 месяцев назад

He is, the direction is 30 degrees so he's making that part negative

@lenael4747 4 года назад

This guy is awesome ❤️

@JasonBurnettsProfile 4 года назад

I followed you, but the problem is that you are giving us the angles to start with. How can we determine what angles the two objects go off at? In other words, in the real world, you have a 6kg object hit a stationary 5kg object going 6km/hr, how do I determine the 60/-30 angle split?

@adrianneadonis7401 2 месяца назад

Thanks so much 👍🏻😊

@rysonwell5071 5 лет назад

Tq it was help me a lot

@Song-ub9rk 3 года назад

why is m1v1x' -ve (why cos(-30) ), isn't the horizontal component pointing to the right?

@jeewoo7195 3 года назад

yes, and cos(-30) = cos(30), as in they're both positive

@hectorgrand3214 2 года назад

I dont get how you can sub in the y value with the x value, towards 7min. Plz somebody explain 😭😭

@lethbophilip6365 3 месяца назад

Lot appreciation ❤❤

@medotedo8410 3 года назад

But when I am substituting values to verify the conservation of momentum the answers are not the same !

@helpontheway7856 5 лет назад

Much love brother

@ernestdaka7825 4 года назад

Asante sana

@samfogelson2050 3 года назад

Why does he use Cosine and sine?

@natnaelendalkachew8458 3 года назад

Not all heroes wear capes like fr im barley hanging on with wht my teacher teaches me but you damnn

@nataliabacic 4 года назад

Can someone explain to me why sometimes we use p^2/2m and sometimes 1/2mv^2 in the formulas?

@karishmasawhney21 3 года назад

Hey. p=mv In the equation 1/2mv2 if we multiply the numerator and denominator by “m” it becomes m2v2/2m..Put p2 in place of m2v2 as mentioned in the first line! Hope it helps

@jesusmrosario-claudio4104 3 года назад

Thank you once again.

@user-ne8yl4bw2k 6 месяцев назад

It is solution for freshman for long periods

@fahimal-huq6867 6 лет назад

THANKS A LOT

@malikandrew8887 2 года назад

Hi I'm malik Andrew from Nigeria I have a little problem on momentum and impulse

@user-nd9tz5tc1b 6 месяцев назад

Thank you so much sir

@Hercrati 3 года назад

For the end answer, is it bad that you got one positive and the other to be negative?

@Sir_Isaac_Newton_ Год назад

youre not smart are you

@roknagor 5 лет назад

how do you solve it when only one of the degrees is given though :(

@machbooks 4 года назад

Kahn Academy has that version

@hajranaidoo9037 3 года назад

Love this!!

@Bangpink_vibes 4 года назад

Thanks a lot sir

@raadavijithalimurtaza951 Год назад

why is it cos?

@betul-ev2fu 4 года назад

*TYSM!!!!!!*

@fatihahwahida8123 4 года назад

thank you sir

@thisismyoutubechannel 5 лет назад

god bless u

@dauthuc8807 Год назад

Love you dear you are so good

@sdjdavies42 3 года назад

Thank you

@aryajoshi8069 3 года назад

goated man

@ICantSeeYourRepliesDickhead Год назад

I love you man

@stevendee6800 3 года назад

Why are you better than my tutor it’s annoying

@davidalacabo4298 Год назад

Is this elastic or inelastic collisions?

@Ariana-sf3li 6 лет назад

You sound like Billy Russo from the Punisher

@diavolo_didnt_deserve_it1118 5 лет назад

he doesnt.

@chateaubunny 3 года назад

DUDE I LOVE YOY

@fahadkhaled5056 4 года назад

Love you

@jungiejg 6 лет назад

what does prime means?

@reynolddlm 6 лет назад

Jungie Cual prime means final, i guess

@deborahdouglas682 6 лет назад

final

@LJ-ml7oz 5 лет назад

its just something you put to differentiate initial from the ones after. its like a marker.

@machbooks 4 года назад

means after a change, two primes would be after two changes

@tebohophomane9058 4 месяца назад

Legacy ❤❤❤

@tomasmenchaca1903 Месяц назад

Am I the only one that heard the car alarm at 5:38?

@darkslayer5558 Год назад

GOAT

@dulinadissanayake7560 2 месяца назад

Its easier to solve it without calculating decimals

@vedulabs766 3 года назад

Look at Virtual Laboratory (3d real time WebGL) about Momentum Conservation (absolutely elastic collision in particular) in mechanics at vedulabs.com/