Momentum Collisions in 2D

[@m.a.k5667]

knowledge still being delivered even after 8 years of shooting it. Great job sir.

[@Ureyeuh]

You have replaced my phys 298 professor. You're the only clear speaking, slow teaching, individual on KZbin with a nice presentation and solid delivery. This channel deserves SOO much more attention.

[@saoodalhammadi6072]

when do we use cos or sin, i'm confused

[@enderfury6086]

@@saoodalhammadi6072 draw the right angle triangle. From that you find if you need cos or sin

[@tenzinhoog1014]

This channel fxckin sucks

[@keyboarder4605]

@@saoodalhammadi6072 we use cos when we want to find component along the angle and sin when we want to find component opposite to angle

[@Mike__B]

@@saoodalhammadi6072 depends on situation, SOH CAH TOA should be your mantra, draw a picture, let the picture with your mantra help decide what to use.

[@mksalvador4655]

He has mastered writing letters backwards

[@254medhat]

very clear, step by step explanations. Simplifying what I consider complex things makes me feel good in class...Thanks Prof

[@yoprofmatt]

Excellent. Thanks for the comment Malak. Cheers, Dr. A

[@saoodalhammadi6072]

when do we use cos or sin, i'm confused

[@tawangacuna1]

@@saoodalhammadi6072 cos to the xaxis, sin to the y axis

[@elichampstyle]

You sir, are an angel. Written at 2am the morning of my 8am exam on dynamics and conservation of momentum.

[@saoodalhammadi6072]

when do we use cos or sin, i'm confused

[@SCP--mw7tx]

@@saoodalhammadi6072 i'd recommend you to learn some trig first, learn the unit circle, and also try and understand how vectors work, it'd make understanding why a lot easier. essentially the sine works in the y axis, and the cosine in the x axis, though the only way to really understand this would be to learn the math first

[@katebalbalawi890]

Explaination is so clear. I've never seen it yet in my University! I just attended class to not get denying. Thanks you Prof. I hope you have a happy life.

[@jerish2125]

It looks so cool because it looks like he is writing backwards but it's just the mirror effect I found that out by looking at your wedding ring. It looks really cool. Thanks for making this video.

[@青雲浮遊]

JerishDoesKZbin Do people usually have their wedding ring on their left hand?

[@jerish2125]

ESZQCYHNMKO EWK Before medical science discovered how the circulatory system functioned, people believed that a vein ran directly from the fourth finger on the left hand to the heart. Because of the hand-heart connection, they chose the descriptive name vena amoris, Latin for the vein of love, for this particular vein.

[@alaskantrader6236]

watched for fun, always trying to expand my mind. honestly though the only thing that had me watch to the nd was the fact he was writing backwards and still understood the material enough to present it forward in a lecture type setting. bravo. hope my physics profs are half as educated

[@yoprofmatt]

J, Not writing backwards (I'm not that talented). The board is called Learning Glass. You can check it out at www.learning.glass Cheers, Dr. A

[@尘世之际]

Am i the only one who wonders about how he write without writing backward?

[@jordies99]

he is left handed, he is writing the same way as the ones we use the right

[@brandonmwansa3714]

Thanks professor well explained

[@nishanpaudel5876]

Its simple he just used mirror in editing

[@sundeepchandy]

check: 10:54

[@sandra4676]

Me

[@samsidvars]

You literally are the best physics teacher on KZbin and one of the best I've ever gained knowledge from! Kudos sir! Thankyouuu.

[@saoodalhammadi6072]

when do we use cos or sin, i'm confused

[@drizling1]

Sir u r a highly knowledgeable and highly student friendly person...sir ur lecture made me super expert in solving all the question of jee advanced previous year questions thanks sir..u r great

[@mrboyban]

I needed to watched this video for more than once. I love when he asks the class: QUESTIONS ABOUT THAT? Do they genuine have no questions to ask? By the way thanks for making this valuable content available to all of us!

[@yoprofmatt]

No problem, thanks for commenting. Cheers, Dr. A

[@padmaisonaroll8613]

very patiently and well explained! Thank you so much!!!!

[@saoodalhammadi6072]

when do we use cos or sin, i'm confused

[@bhattRV9686]

the swag n attitude of physics is next level👍🏻👍🏻👍🏻👍🏻👌

[@oneinabillion654]

Sometimes I feel frustrated when looking at questions involving many linkage between equations or messy. Ur presentation is very neat, I understood easily.

[@yoprofmatt]

Glad to hear it. Keep up with the physics. Cheers, Dr. A

[@ZSiblings]

Thank you soooo much sir now my concept is clear. I watch many video about 2D collision but this is video is bestest ever. Thank you sooo much Sir again😇

[@yoprofmatt]

Zohaibzaryab Zaryabiqbal, You're very welcome. Glad you're enjoying the videos. You might also like my new site: www.universityphysics.education Cheers, Dr. A

[@ZSiblings]

@@yoprofmatt ofcourse sir😇

[@moizkhan9949]

you cleared my concept of 2d momentum but you confused about how you were writing like that?

[@axalate4572]

Ahhh finally someone with my confusion

[@narsinghnagarkoti8505]

I think it's just a mirror view

[@axalate4572]

no i found out.its first recorded and the video inverted horizontally thats why he's writing with the left hand

[@surat8591]

I wish you were my professor! Thank you for making this video Dr. A!!

[@nancykaguima]

your handwriting is therapeutic

[@asiyafatima544]

Great explaination ! Collisions in 2D has become clear as glass now !!

[@yoprofmatt]

Asiya, Excellent, glad to hear it. But don't go getting into a 2D collision now. Cheers, Dr. A

[@kamvc72]

Excellent 👌

[@shallen2008]

Wait i have a question, what sort of whiteboard is used in this video?

[@Maria-kx1hk]

Hi, do you have an explanation for collision where friction is eliminated (like in air hockey)? I was wondering on the effect of friction in collision, and planning to do an experiment on that. Thank you, in advance.

[@malikabuhajar419]

The only thing i couldn't find an answer for : is he writing from right to left?!

[@yoprofmatt]

Nope. See kzbin.info/www/bejne/eYirfqeJg7Crj6M Cheers, Dr. A

[@ThaiHoangNamNguyen]

I have a specific question of the part when you asked "your student" about P2ix. I just don't understand why it is zero. Thank you.

[@TocyBlox]

How do you write on that glass?

[@the_urbanist_]

I am amazed of his level of inversed writing

[@BarniDeDino]

I get it but its also a very tedious process, thanks for the clear explanation Mr Anderson, swagger video

[@motorvehicle1330]

I wish you completed the answer. I understand literally everything up until what you showed, but am struggling with actually solving those angles

[@hannakozak3384]

Such a great video! Thank you so much, sir, this helped me a lot!

[@yoprofmatt]

+Hanna Kozak Hanna, thanks for the kudos, and you are very welcome. Cheers, Dr. A

[@JuiceBoxBoiii]

Wow, it looks like a glow stick! This video is great! Thank you.

[@yoprofmatt]

Thanks! A bit monotone, though. I added more colors in later videos. Cheers, Dr. A

[@michaelnweze_]

Sorry I have a question... What if the car don't stick instead collides and travels seperatly to two different directions????...... Am asking this cause your formular for collision on the x axis is contradicting my text book and google tbh

[@yoprofmatt]

_lil_ Tempo, Great question. You present a much more complicated problem. Not only do you have to conserve momentum, you have to conserve mechanical energy as well. I'll put that one on my to do list. Thanks for the comment, and keep up with the physics! You might also like my new website: www.universityphysics.education Cheers, Dr. A

[@abdulqadir-fz6cf]

excellent explanation with impressive personality,,,may Almighty success u,,,,thank u sir

[@SabrinaXe]

Are you the same Abdul from the video?

[@organicchemistry1242]

wow excellent presentation

[@Puzpoke]

As a high school student I think your videos are INCREDIBLE great set up with mics and especially the board curious how you did that ;) Love the whole set up you deserve more subs keep it up Professor!

[@ZdrytchX]

jklee225 Mirror, transparent board. Nothing that special really

[@anandvatsa2642]

Sir how r u writin from behind so that we could see it correctly r u writin in opposite way kinda???

[@yoprofmatt]

Anand Vatsa, Not writing backwards (I'm not that talented). The board is called Learning Glass. You can check it out at www.learning.glass Cheers, Dr. A

[@SM_Int.M.S]

@@yoprofmatt you're talented, professor... That's true that you cannot write right to left but your explanations are so fantastic that my physics practice gets a thrust. I'm from India and a physics lover. By profession I'm a Statistician (Integrated M.Stat degree holder) but by nature I realize myself as a physics enthusiast. I love to spend my leisure with physics problems and teaching. Here in India it's difficult nowadays to go with passion but I want to contribute in physics (may be it'll be tiny but...) as much as I can. Even I have some elementary research works on Theoretical mathematics. I found your videos here in KZbin, I'm thankful to you ,my passion is still inside me.

[@mohamedmusa3325]

You made is clear and simple. Thanks you sir

[@ichigokurosaki2851]

how are you writing backwards throughout the whole explanation?

[@siddharthdeshmukh7026]

Hes a fking genius

[@nicfoster469]

Is he drawing everything backwards on glass so it looks normal for the viewer? That takes some skill (in addition to knowing the physics/math itself).

[@yoprofmatt]

Thanks. Not to burst your bubble, but there's a trick: kzbin.info/www/bejne/eYirfqeJg7Crj6M Cheers, Dr. A

[@v1cturbo]

Anyone else felt bad for him when he asked questions and checked if everyone was understanding and no one answered

[@tommys234]

No that means he did a good job teaching

[@Ureyeuh]

Abdul c'mon bruh

[@sibusisosomnandzi6368]

You just saved my ass today.im writing physics and after this clip,I'm definitely sure I'll kill it.👌🏼👌🏼👌🏼

[@yoprofmatt]

Great to hear. Hopefully you crushed it. Cheers, Dr. A

[@marisolreveles2575]

This is the perfect method to teach in 2020 pandemic

[@twiringiyimanaemmanuel9742]

very nice i think the negative sign is due to momentum is a vector quantity as it have both magnitude(size)and direction .i am i clear?.

[@0xbaadf00d]

Any idea where I could find material for how to collide 2D objects that have rotational parameters as well?

[@yoprofmatt]

By rotational parameters do you mean spinning objects that interact with each other? If so, then the old "Beyblade" spinning battle tops game is what you need. Cheers, Dr. A

[@0xbaadf00d]

Matt Anderson Eh? I'm building a game engine and I'd like to make sure my collision resolution physics calculation are correct. I don't understand how that's supposed to be of help.

[@yoprofmatt]

Ah, no this wouldn't help. You might try the Phet lab: phet.colorado.edu Cheers, Dr. A

[@0xbaadf00d]

Thanks, I'll have a look.

[@DrivenByMiguel]

Like if you watched this during covid online classes

[@yoprofmatt]

Miguel Lopez, Thanks for the comment, and keep up with the physics! You might also like my new website: www.universityphysics.education Cheers, Dr. A

[@irsyadssavero8458]

thanks from Indonesia🇮🇩😍

[@gigigem5631]

I understood perfectly, thank you so much!!

[@mishmashtime8628]

Amazing session 😁😁

[@PRIYANKACHOUDHARY-sk8qm]

Hello matt I m your fan way of explaination is good

[@toppermihal170]

best lesson ever I see at this topic,,bd

[@ciencias3344]

Where do you order a board like that? I basically a glass but how?

[@jhanolaer8286]

what if 3 cars collide?how to calculate?

[@yoprofmatt]

jhan olaer, Still conserve momentum and keep careful track of each. Thanks for the comment, and keep up with the physics! You might also like my new website: www.universityphysics.education Cheers, Dr. A

[@umugabekaziumusalama4648]

i have question, why on y direction have you took horizontal direction as sin x

[@yoprofmatt]

Because of the location of θ. Cheers, Dr. A

[@umugabekaziumusalama4648]

thank you Dr.A . God bless you .

[@yoprofmatt]

Right on! Cheers, Dr. A

[@Moonlight_Gamer]

Very good explanation :)

[@christopherlazo8485]

Man what university is this so I can transfer here to get a good professor for Engineering ?

[@yoprofmatt]

Christopher, San Diego State University. Come on down! Thanks for the comment, and keep up with the physics! You might also like my new website: www.universityphysics.education Cheers, Dr. A

[@vs6x3]

Maths anytime, physics like a shooting star

[@NokoRamoroka]

you're a life saver...Thank you a lot.

[@jatinaggarwal1614]

all douts cleared, by the way what are head on collisions ?

[@vs6x3]

(tho I not him, me thinks )it be one-dimensional collision 🤗

[@timglasser2766]

I think the assumption that the two cars stick together after collision is incorrect

[@RealEverythingComputers]

Thanks sir, really helps

[@sheridan.mp3]

Thank u MacGyver

[@yoprofmatt]

Duck tape and gum. All you need to defuse the bomb. Cheers, Dr. A

[@JohnXavierSieg]

Great job!

[@yoprofmatt]

Thanks John. Keep up with the physics. Cheers, Dr. A

[@fatihahwahida8123]

thank you sir for explaining the concept :)

[@yoprofmatt]

fatihah wahida, You're very welcome. Glad you're enjoying the videos. You might also like my new site: www.universityphysics.education Cheers, Dr. A

[@Loooppp]

You can use hieroglyphs to illustrate, and better understanding. Thats what i do and soon, come à publication.

[@yoprofmatt]

Looop, Thanks for the comment, and keep up with the physics! You might also like my new website: www.universityphysics.education Cheers, Dr. A

[@mailjeevas1205]

youre waffling

[@dbulat]

Perfect explanation! thanks

[@yoprofmatt]

Daniel, Thanks for the feedback. Cheers, Dr. A

[@kartikanand5374]

Better I should say,"PERFECT!"

[@yoprofmatt]

Also a cool adjective. Cheers, Dr. A

[@aninditachoudhury7173]

Very good explaination

[@yoprofmatt]

Thank you. Cheers, Dr. A

[@praneethrajula1809]

How are you writing in air?

[@yoprofmatt]

Panni Rajula, The board is called Learning Glass. You can check it out at www.learning.glass Cheers, Dr. A

[@praneethrajula1809]

@@yoprofmatt thanks

[@betelhemsisay6237]

he :teaching me:how is he writting on the MAGICAL BOARD?

[@inspiredbyJesusChrist]

Respect to you Professor

[@yoprofmatt]

And to you. Thanks for chiming in. Cheers, Dr. A

[@diagrammaster4649]

Thank You So Much ❤️👍🙏

[@yoprofmatt]

Diagram Master, You're very welcome. Glad you're enjoying the videos. You might also like my new site: www.universityphysics.education Cheers, Dr. A

[@andevarun2388]

super explanation

[@dimuthuyapa8129]

Thank you so much, sir

[@adrinah8228]

Physics test in two day. I can feel my gpa rising :)

[@arjunkbiju3636]

Thank You sir..........

[@glen4427]

i want to love this video

[@007abooody]

Thanks, Dr. A that helped a lot. I was kinda nervous because I didn't understand the material very well.

[@yosacrafts5135]

I was literally waving my arm at 8:26 😂😂

[@yoprofmatt]

Feeling a bit negative? Cheers, Dr. A

[@yosacrafts5135]

@@yoprofmatt 😂😂 I really wish you could prepare zoom programs so it could get more interactive! And thank you very much for replying!

[@emmafrank6690]

Very good.

[@yoprofmatt]

Thanks.

[@marufmonem]

Amazing explanation!!

[@yoprofmatt]

Thanks Maruf! Cheers, Dr. A

[@mangotreat]

i wish so badly that i couldve prevented newton getting hit with an apple... look what nonsense I have to a test on in like 45 minutes...

[@raghvijoshi8823]

love ... 😻😻 thank you

[@yoprofmatt]

You're welcome. 🚕 Cheers, Dr. A

[@AsAs-wn3dm]

So good

[@yoprofmatt]

I appreciate that, thanks. Cheers, Dr. A

[@Hammadisteachingchemistry]

Deepest condolence to Abdul Aziz

[@yoprofmatt]

Thanks for sharing. Regards, Dr. A

[@Joe0x7F]

You can also solve this problem using the conservation of the velocity of the center of gravity. In this particular problem, the initial center of gravity will be at a point in the 3rd (or 2nd) quadrant, on a straight line connecting m1 and m2, but also on a straight line connecting the origin. Notice that the COG point will always be at the fraction m1/(m2+m1) of the total shrinking distance between m1 and m2, away from m2. If you connect this initial center of gravity point with a straight line that passes through the origin, the COG point will always have the exact same velocity vector on this line, before and after the collision, passing right through the origin and into the 1st (or 4th) quadrants. It is very interesting (at least to me) to solve these problems with both conservation laws.

[@amaclellan3]

pay attention chris.

[@Sam-ir6iu]

Chris look alive bruh

[@yoprofmatt]

+Samuel Souto Yeah Chris, wake up. Wait ... who's Chris? Cheers, Dr. A

[@gebyvargas6057]

Am i the only one who finds him painfully attractive?

[@yoprofmatt]

You might want to get out more. Thanks, though! Cheers, Dr. A

[@gebyvargas6057]

Thank you! This was also very helpful for my AP class.

[@anthonypeters1797]

He wrote p2fy instead of p1fy. Great video though

[@kartikanand5374]

Bravo!!!!!

[@yoprofmatt]

And to you! Cheers, Dr. A

[@gretawilliams8799]

I fuking want that Marker

[@yoprofmatt]

You can fuking have it at the fuking Learning Glass company: www.learning.glass Cheers, Dr. A

[@winniehoran4565]

I wish u could be my professor

[@chigo_e]

I wish he used numbers tho.

[@yoprofmatt]

Chigozirim, It's important to keep the variable until the bitter end. Thanks for the comment, and keep up with the physics! You might also like my new website: www.universityphysics.education Cheers, Dr. A

[@FLYING_CHOBBAR]

You write reverse 🙄🤨

[@curias7]

@mini heart attack @5:33

[@yoprofmatt]

Woke him up at least! Cheers, Dr. A

[@dinkmartini3236]

AND...writing backwards.

[@tommys234]

he flipped the video

[@invalid9553]

Liked at 999 likes

[@yoprofmatt]

Vernoin, Thanks for the comment, and keep up with the physics! You might also like my new website: www.universityphysics.education Cheers, Dr. A