Introduction to motion (part 3)

[Kricardose]

I am very happy to see the vidoe Using the basic equations of distance and velocity to solve motion problems after you give this

[bebeheuy]

I Love The Video It Can Increase My Knowledge Using the basic equations of distance and velocity to solve motion problems

[Mjhond]

Steady I Really Like This Video Using the basic equations of distance and velocity to solve motion problems

[ambarigreyson3000]

thank u bro...lol i c kids who dont study everyday on ur website trying 2get their bit of knowledge in before a bog test lol

[tulitech]

Thank you very much! Very clear easy to understand explanation! :) GONNA GET FULL!

[bone0944]

Your tutorials are excellent. The explantions of the concepts described are very intuitive and make a lot more sense than most others that i have seen. I have one criticism and that is that the graphics you use are not very clear and rather untidy, which can lead to confusion as to what the symbols that you have written signify.

[Drujeful]

3 socialist school board members disliked this

[TheLegendofPokemon]

Thanks for making this video! I'm taking physical science, and this helped me A LOT. Again, thanks.

[sydniebon]

your drawings helps a lot..! keep on uploading educational videos.. :) godbless ..

[paulceltics]

thank you so much

[mtdeezy]

is it just me or is the video quality really bad?

[XxBooSTeRHunTeRxX]

@mtdeezy nah its just you

[thegreendayfanable]

which software do you use?

great explanation

[paenitet7nullum]

good job man not really what im lookking for but good job anywayas

[ysfnvji]

Sal, You are the best. period.

[iammeghanas]

u r the one best professors i have ever seen.....

[HxenGx]

wait prof, i am confused by this, why do: d = att/2 ? when i convert this into units, it sounds wrong.. m = (m/ss x ss)/2 = m/2 ?! i dont get it, can someone help? tia

[solshine26]

@HxenGx The seconds cancel. since its just ss/ss

[HxenGx]

@solshine26 ohoh...!! thx (:

[pocodulce72]

Thank You! My teacher goes too fast in lecture and then acts like I should teach myself. I was not named Newton! I am just in junior college physics 100 after not attending school for over ten years. I never had good study habits and I am learning how to learn all over again. This is helping me supplement my notes and studies.

[SMITHMA00]

Hope this pays off in my physics test

[afnaan15]

thank you sal,I am really sorted now

[PhyriousDuck]

Dude, this actually makes sense and in my platoon my call sign has been for the last six months fucktard. Seriously. Fucktard. And I now understand projectile physics taught to me in a foreign language. Thank you, you have given me a elementary grasp of sciences nobody has been able to give me before.

[Heatherinski]

Wow, you make so much more sense than my textbook. I'm a homeschooler, and you are DEFINITELY a lifesaver! Thanks for all you do Sal!

[olutunu4]

wow! God bless you! and that's all i feel like i should say.

[breakdance74]

Hopefully I'll get my teacher to show your videos in class. Thanks!

[pokechamp2006]

It takes a true genius to relate his intelligence to the common world. This man is doing one hell of a job.

[TheBlackFridays]

Colleges charge out the nose for a much more complicated method of teaching. One could actually learn and master more from this guy than he would wasting his time and money sitting in a university.

[kramer303]

Great video, as usual. One question though. How have you gotten 2Vi+at/2 = Vi+at/2? What happened to the other 2? When i put the numbers in they don't add up..

[devilpizza123]

@kramer303 the part u are referring to is (2Vi + at)/2. the whole thing is divided by 2 not just the at. and so when u split up the fractiion u get 2Vi/2 +at/2 which simplifies to Vi+at/2

[drstingrae]

SAL,

Good stuff

[omega48er]

thanks sal, u make it easy, what college do you teach at

[TengoNoNombre]

hey teach, u need to buy an e-pen, seriously is like 10 bucks on ebay so that way you write on paint program with your e-pen instead of your mouse

[Hawkallica]

@TengoNoNombre He has one now, someone donated a $300 kit for him. All of his new stuff HD. No point in redoing all the old stuff.

[max1916251080]

Can anyone try and solve this? i can't figure it out.

You and a friend take seperate vehicles to travel the highway to the lake. Leaving at the same time, you travel at 85km/h and your friend travels at 95km/h. Your friend gets to the lake 12 minutes before you.

How long does it take you to drive to the lake?

How far is the drive to the lake?

[Albandr]

lets call the distance D and my friends time t

D=95*t

and for me my time is t+(1/5) since 12 min is 1/5 of one hour

D=85*(t+1/5)

we can now say with the given equations

85(t+1/5)=95*t

solve for t

once you have t, insert it in the formula for distande and presto! you have the answer =) hope it helps

[Albandr]

lets call the distance D and my friends time t

D=95*t

and for me my time is t+(1/5) since 12 min is 1/5 of one hour

D=85*(t+1/5)

we can now say with the given equations

85(t+1/5)=95*t

solve for t

once you have t, insert it in the formula for distande and presto! you have the answer =) hope it helps

[xSMOKEYv]

i love you!!!!!

my teacher makes it complicated, thanks Sal!

[sonnenblume74]

your lecture is very good!

but please work on your handwriting and also make the movie in HD, so one can see all what your are writing. Thank you :-)

[maleeham87]

if he writes something blurry, he always makes note of it to clarify...

[bhaskarpanerihotmail]

he is using paint!!!!! he does not have a cool software. I can barely write my name properly in paint.

[MrTinching]

I sucks dude! I have to pay 4 this 2 download!

[asmodeus585]

Great lecture, thanks for posting. :)

[Johnjpcoc]

Confusing !!!!!

Ooh my god!!!!

[orochimarujes]

I understand more from you than my physics teacher.

[daniellopezd]

how do u get the final velocity if you are only given the mass, acceleration, and initial velocity????i don't know the distance nor the time!

[FrankRizzo6662]

What happens if time is negative? :P

[clixsyt]

Like time travel?

[loveu2121]

no such thing as negetive time^^

unless u got a time machine which can go back in time

[FrankRizzo6662]

I do :)

[joninacann]

physics views time more as a dimension or direction than a separate idea

[floopsie666]

Time isn't negative in the posotive energy world. Maybe with anti-quarks and their negative energy. Makes you think....

[Nutterbutterz95]

Lame pun.

[Nutterbutterz95]

As I pointed out before in the last video, a(t) can be simplified to v, and a(t^2) can be simplified to s (speed). Why does he not do this? Is there a reason, or is it simply that he didn't want to simplify?

[wahkimoocow]

lol, i thought the pun was funny

thanks this helps me sooo much.

[eve1205]

Awesome video. Interesting and funny too. Keep up the great work :)

[Zanark9]

You are credit to team.

[ayaz1687]

you are doing a great service to the world posting these videos. thanks very much

[JTsk8er69]

seriously... you're awesome!!!!

[Marshall333333]

yay

[SuperDrinkin]

drinkin

[horntail140]

It is amazing how physic professors uses so much stuff (videos, worksheets, ect.) and you still don't most things he is saying, while all you use is a video and i already get almost all of the concept. You are a genius at teaching. P.S if any school were to hire you, they should pay at least $100,000 for you salary!

[bobstevefrank123]

@horntail140 lol more like 10 mil

[Nazthehellraiser]

NOT †imes Square..™s squared...that's funny

[09194586489]

thank you very much for making this video!this is a very big help to me!

thanks a lot!!

[pure5abi]

you are a very good teacher sir!

[petmaster495]

It's a little confusing, but I think I get most of it. On to Projectile Motion (Part 1)!

[Max11551]

I agree. This is amazing. It's very educational to have this in-depth look at 1D motion.

[ogaruu]

no comments? incredible. aanyway part 3. and this is great.

[HotActionProductions]

it is a great video, you should watch it.

a long time ago, the vcrs used to be a human. its easy to do if you solve for Y, and use the Kalcalator. btiptycally, my sons in seatle and its not easy to get a job there. do you know anything about diesels?

[yadsik]

What on earth?

[HotActionProductions]

Btpyptically, Kalalators and VCRs were replaced by the human being because they used to be a human. There's not a good job market this days. Can expect to get a job? Not this days. You could get drown going down to that pond to fish. Anybody worked on an aircraft engine? There were some big dogs in Russia. There are 40-11 ways to spell BBQ, so I figured there might be more ways to spell nacho.