Parametric Equations 1

[xxmattman5532xx]

wtf? ifoud this of a skrillex song wtf?

[michaelwillows]

Awesome planet with no air but still with internal combustion engines.

[elihuffman1229]

Your vid is a favorite on East Timor (Timor

[gammaray850]

BEEKEEPER.

[obsidianfinger]

Why the additional time-squared over time at 4:20?

[BluePhire1]

@obsidianfinger It ended up being 10t squared over 2 because of a physics equation that he did not go into. The equation is y = (initial velocity)*(time) + (1/2)*(acceleration)*(time squared). Since there was no initial velocity in the y direction, the change in position became y = (1/2)(10 m/s)(t squared). It is minus because it is downwards.

[obsidianfinger]

@BluePhire1

Thank You :-)

[Danielxyoon]

i was wondering..do you use the mouse to draw these things or is it like a smart board?

[CJEF1996]

this is the wrath of khan

[eweykidd13d]

Your video went viral on Apia

[Dotachin2]

does anyone know the program he uses to draw the diagrams?

[tangiblephoton]

Genghis Khan!

[TheMissclassyg]

wow...

[DaDude458]

how on earth do you draw such perfect lines~!

[MrJTB93]

KAHN FOR SECRETARY OF EDUCATION!!!!!!!!

[AmidSedghi]

midterm in 2 day - god bless

[MidnightxReader]

I'm in 9th grade o.o

[Macdawg347]

I love your teaching style, very good job!

[shoshkez]

do you want to be my TA?

[rommelram1lovr2]

Hey!...Sal...More power!...(is it ok to say then that the Projectile Motion videos are mathematical analyses of one-dimensional variables (h or delta D)...the 2-Dimensional Projectile Motion...of two-dimensional variables (delta D & Ave. Velocity)...the Prametric Equation...of three-dimensional variables (x, y, & t) or are they...Alll...3D analyses???)...tnx! :D

[itechkid]

@Lamboragon if you don't like the video, find another one that takes your fancy out of the 396 other videos on parametric equations.

[Joshida9]

eureka i get it!!!!!!!!!!!!!!!!!!!!!!

[doughgirlie]

mr. maag sent me here



[ForeverWiked]

why isn't it y = 50 - 10t

I feel like I learned nothing in physics now T___T

[EsaldaH]

@ForeverWiked acceleration : ax=0, ay= -g (gravitational acceleration on earth)

You integrate the acceleration to get the velocity -> velocity : vx= 5, vy = -gt (don't forget the initial conditions, here the velocity at t=0)

Then you inegrate the whole thing again to get the position -> position : x=5t+10, y= -gt²/2 + 50 with g~10m/s²

Again, initial conditions. Position at t=0.

[mjkper448]

what a khant.

[missgambolputty]

I feel like I've been enlightened...

[2454014]

Get to the point faster dude.

[tadm123]

@2454014 not everyone is as fast as you my friend

[Tucktasticationister]

I made my Youtube account to listen to free music.... I never thought I would subscribe to a math teacher! haha

[DavidFolan]

Thank you so much. I am learning about this for my physics degree and I just couldn't get my head around it. Now I understand perfectly. :)

[frostwow]

paranormal equations

call the FBI and ask for Fox Mulder

[Naruto0519]

He must have gone to college like 20x with different majors each time to be this damn smart D: That's a lot of money T_T

[HoorayforOranges]

@Naruto0519 All he does is not fill his videos with fucking mathematical jargon! Ace!

[Naruto0519]

@HoorayforOranges True true! It's not confusing like teachers always make it seem!

[agjehj]

wow.. you seem to be enjoying this. a lot. and pretty colors :)

[fatboy2oo]

AMAZING!!! You are great.

[JordanMedina]

thanks man this cleared things up!

[PotholesInMyLawn]

I have been out of University for a few years.. This is what makes Youtube worth the server space! Thanks

[Mazelovehardcore]

omg

[loverofbeats]

amazing! :D

[ana8woahhh]

You rock!

[Jonnemanne]

I really like these clearer high-def videos ! It'd be great if you could redo the projectile motion videos in HD. In my opinion there's nothing better for the beginning/struggling physics student than clear, easy-to-follow AND read fundamental videos. :)

thanks Sal, you've done an awesome job !

Greetings from Finland !

[benv4]

watch video 2 if u didnt understand where he got t = sqrt (10) :P

[shibbyness]

THIS IS REALLY GOOD!

[restituted]

sorry why is t = the sq rt of 10 when figuring out when the object hits the ground?

[klotweev]

@restituted

Because, he set the equation equal to zero(the y axis being the height(when would the car be at zero height, or hit the ground)), and the equation was then 0 = 50 - 5t^2. So, he had to figure out what t would have to be for 50 - 5t^2 to equal 0. If t = the square root of 10, then the square root of 10 squared = 10. 50-5(10) = 0. So at the square root of 10 seconds, the car hits the ground.

[restituted]

@klotweev

tooootally understand now, thanks so much for the explanation!! :)

[restituted]

@klotweev toootally understand now, thanks sooo much!! :)

[microhaxo]

@restituted

0 = 50 - 5t^2

Solve for t.

[dancinallnight]

why 10?

[memonahmedsafi]

PATHAN :P

[CuteAnimeJunkie]

Thanks so much! This really helped me n_n

[00JosefK]

The car off the cliff problem always makes me think of Toonces the driving cat.

[osmanertas]

what is this app

[SandstonRedneck2]

sweet I'm ahead everyone

YOUTUBE SHOULD BE UNBLOCKED AT SCHOOLS

[skateme1]

@SandstonRedneck2 damn it's not unblocked at my school. sucks for you man

[r0b0bert]

Khaaaaaaaan!

[GAMER4LIFE7777]

I feel like you deserve pay for every one who whatched this... simply amazing... ive never laughed while learning about parametric equations. i <3 you!!!!!!

[vkgoku2012]

What is this play list

[stramelhouse]

woah. Thank you so much.

[rinwhr]

PARAMETER.....PARAMETER

[DanielKovach]

This is good so far; I am only a few minutes into it.

[ringo38825]

brilliant! I'm a math major and a Trig tutor and this lecture has given me a new method of teaching parameters.

[veralau93]

thanks that was fantastic!

[medihunter]

I will force my math teacher to show this in class! this is great! i understood everything. AND you arent crazy!

[RAFAMAXXX]

Ecuaciones diferenciales ordinarias

[TuscaniManiac]

may god bless you man..just keep doing those videos ..they're super helpful !!

5 stars !

[mechwarreir2]

are parametric equations calculous or precalculous? Cause its in my pre calculous text book O_O

[GDATERRY]

I learnt it during precalc. But naturally it applies in calculus too.

[bboydjoe]

@mechwarreir2

its in calc too, (calc bc to be exact)

[raidtothegrave]

subscribe 5/5 stars tyvm

[sin67153]

thanks man your better than my boring math teachers

[rolfch1p]

nice videos!

[stealth834]

I am a math tutor and your videos provide me with another method to get information across to students. Thanks for the great work!

[thelastwords]

Your videos are awesome. thanks a lot.. this is really cool

[jacoman1234567]

Does the mass of the car have any influence on the downward motion? Or is it taken in by the projectile curve formula?

[thelsdj]

No, mass has nothing to do with acceleration of gravity. A ping pong ball and a golf ball would have the same path if there was no air resistance.

[davenhunt]

The mass would be used in calculating the force on the car (or the ground), or some other information. If the car had no mass, gravity would not affect its motion. In a vacuum, all masses would behave in exactly the same way, so the equation covers objects of any mass.

[jacoman1234567]

Thanks for clearing out my mistake :)

[LoneAssassinX]

Great!!

[paperorpaper]

Sal can you please make a basic gemonetry video? I was going to start practicing but I have no idea what to do.

[doubletrance]

i really like your vids. keep up the good work :)

[Jtking3000]

bvtvrocks you're gay why did you 1* this?

[BVTVRocks]

i am not gay. bad video hard to read. 1*