Physics Lesson: Vector Components Part 1 for high school

[TheMendozabradley]

how did you knoe that the A x positive is cos? and the y is sin? how to identify if the operation is cos or sin?

[Emin3m802]

@TheMendozabradley COS is.. COS=Adjacent/Hypotenuse.... Hypotenuse is the vector. the Adjacent is the bottem line. SIN is Opposite/Hyptenuse.... The Opposite is the arror sticking up... Get it?

[TheMendozabradley]

@Emin3m802 yes i get it but npt 100%

[Emin3m802]

@TheMendozabradley wat dont you get?

[bribribri56]

brilliant video

[rodswebdesign]

love the video really good

[Bakugantsuvai1]

Hey can you do videos on how to add non-perpendicular vectors?

[elenasdiaryx]

Wow its so easy for high school :/

[PhysicsEH]

@shottyshnypes Hi. Look for our video Physics Lesson: Vector Components Part 3 for high school. I think that should be the one to help.

[hifatpeople]

Lol, My physics book explained how to do this but i had no idea what it was talking about cause it was saying tangent and confusing words. Then i was like, wouldn't it just be easy to divide it into north and east? Hmm.. if only i knew how to do that...

[PhysicsEH]

@hifatpeople I hope the videos help. Best of luck with your course.

[KoolioJosh]

I remember seeing this in great 9 and i was like what the? now this was the 2nd thing we learned in gr12 u physics.

[PhysicsEH]

@KoolioJosh I hope the videos help. Good luck with your course.

[TheInuLogical]

OH MY GOD THANK YOU! My teacher goes way too fast in a class of about 30 people! This makes so much sense!

[PhysicsEH]

@TheInuLogical Thanks for the very nice comment. glad we could help.

[MrMayurprajapati]

hi



[DeadHappyFilm]

this is exactly what i learned in high school but with different terms.

[PhysicsEH]

@christianx32 Hi. Your calculator may be set in Radian mode. There is a button to reset it to Degrees and it will then give you the correct answer. I hope this helps.

[christianx32]

@PhysicsEH haha i removed my comment because right when i posted it, i figured out what i was doing wrong, but thanks anyways you are a great teacher! :D

[delaney4708]

but i dont really do physics when im in 9th or 10th grade i will watch this video again so plz dont remmove it thank you so much :)

[PhysicsEH]

@delaney4708 We don't plan on ever removing the videos so they should be there when you need them.

[delaney4708]

@PhysicsEH ok

[delaney4708]

thx

[PhysicsEH]

@delaney4708 You're welcome.

[darkangelthn]

Do you have a video on torque?

[PhysicsEH]

@darkangelthn Hi. Sorry we don't have on on torque. You can see all our videos at the link in the description. They are organized there with descriptions. I hope you find the videos help.

[nektazoidcico]

omg much better than my physics teacher here back in hungary that guys a douche

but learning in english is much more fun and its easier for me to understand

so thanks 4 the upload

[PhysicsEH]

@nektazoidcico Thanks. glad we could help.

[badendofthestick]

Just want to say thank you for uploading this! You are helping people all over the world!

[PhysicsEH]

@badendofthestick Thanks for letting us know they helped you. We're glad to help.

[XsoEmiXD]

Yeah, I'm defenitely never going to be Albert Einstein...

[PhysicsEH]

@XsoEmiXD With the right haircut you may just be able to.

[BubbleWagons]

Helpful lesson. Thanks Bob Saget :P

[PhysicsEH]

@BubbleWagons Glad to help.

[SuCKeRPunCH187]

@PhysicsEH how do you know when the angle is East of north as opposed to north of east?

[PhysicsEH]

@SuCKeRPunCH187 Part 1-we try not to describe angles using the format " 60 East of North" but a style with a direction then the angle then the other direction, such as [North 60 East] or [East 30 North]

Part 2- [E 30 N] means you point toward the east then rotate an angle of 30 toward the North. If the angle was to start at the North and rotate toward the east it would be [N 30 E] and look like it's pointing more toward the north. I hope this answers your question.

[plainoldbum]

Hey guys,

Your videos have been helpful...Thank You. I was also wondering whether you had videos to do with other topics 'like space and/or electricity'.

[PhysicsEH]

@plainoldbum Hi. Sorry to take so long to get back to you. Thanks for the feedback. We are hoping to make more on other topics. Our plan is to probably work on Sound and Waves next. Thanks.

[SuperAirJorDan100]

im gonna be taking physics and im a freshman

HELP!

[PhysicsEH]

@SuperAirJorDan100 Hi. I think a lot of our videos will be on topics you will be studying. I hope you find they help you. There is a link to our webpage on the videos. Try that. They are in a chart at the lower part of the webpage.

[flamingfigures]

Heh, I got a pretty high mark in my physics 11 (university prep... canadian here) But regardless, it's possibly my favourite subject. Always good to review before the next year =) I'll be going through all my old notes... I just wish I could keep my textbooks over the holidays heh (or at least get e-book copies)

[eyeAMtwinkEE]

Sine, Cosine, and Tangent are all 8th grade mathematics guys. :/

[PhysicsEH]

@eyeAMtwinkEE Yes, but we still get a lot of requests for a review of this. I hope you still enjoyed the video.

[eyeAMtwinkEE]

@PhysicsEH I did. :D



[martini4948]

Thanks.

[LordIllidan98]

What are vector, displacement, and velocity?

And which of these deals with a gravatational force to act upon?

[PhysicsEH]

@LordIllidan98 Vectors are things that can be measured with a length and direction. The simplest is displacement which shows how far you walk and in what direction If I walk 6 miles [east] then 4 mi [north] I can find out how far I am by drawing it out and measuring the result. Take a look at our video Vector Addition Graphically. Velocity is how fast and in what direction

[alyssaling]

Hello, I'm olnly in the 6th grade but I can understand everything he is saying right now. But will someone please comment on what the cos is please? This would make this so much easier, not that it already isn't.

[PhysicsEH]

@alyssaling We use right angle triangles because if we have the length of one side and an angle we can calculate the other sides. Example if the long side is 8 and the angle is 30 degrees the opposite side will be 4 and the adjacent side will be 6.9. The sin, cos and tan are the math relationships that let us do this. When I calculate something for a triangle I need to use the sin cos or tan button on the calculator to let it know which side I want and which side I have.

[PhysicsEH]

@alyssaling Good for you for trying to understand this. I hope my explanation helped because without a diagram it is hard to explain. Youtube also only allows for short explanations.

[elpueblano009]

dam this looks difficult

[jchernecki]

thankyou so much

[leo3k]

how do you kow when to use cos or sin?

[PhysicsEH]

I didn't take the time to show it in the video but by rearranging sin and cos you will find that the opposite side to the angle ends up to always be the vector X Sin of the angle. The adjacent side will always be the vector X the Cos of the angle. You probably don't need to show how it is derived in a solution to a question so just look at where the angle is and use Sin to solve for the opposite side and Cos for the adjacent. It's hard to describe without a diagram but I hope this helps.

[Themossers]

COOL i like your videos Mr Caruana

keep up the good work!

[erol56]

I thank you good sir

[Adamlikesguys]

This is the nearly the most basic form of Physics. If you struggle with this in your class, you're going to continue to struggle even more since this is a fundamental thing you need to know for later problems which are more complex like Newton's Laws of Motion. My advice would be get help, or know your limits and drop the class.

[jklol1515]

i hate physics but this helps alot

[ColdZer04]

I wish this guy was my Physics teacher

[anthonychemistry]

that was really great explanation i have ever seen in breaking vectors. that was really straight forward. I like that guy....i subscribe.... 5/5 rating. More videos mate.

[zachrush666]

look who decided to shave. now you look like robin williams

[antoroma009304]

gotta say, thanks for this effort since my teacher is not organized liked this guy...

[khitb]

wow 8th grade math ....

[dogmacentric]

This is very useful. Thanks for your effort.

[bellanei]

thank you so much ^^

[WizardOfHumor1989]

How do we get the two components? How do we get 6.9? How do we get 4?

[jfkq]

i really wish i would have done more than just play my guitar in high school... I'm not getting how 8 multiplied by 30 became 6.9

[PhysicsEH]

Hi.

The 8 is multiplied by cos30. If you use a calculator you will find the cos30 = 0.866 and that number times 8 = 6.9

By the way, playing guitar is not a waste of time. That's what keeps me sane.

[xexejesse]

basic physics right?

[PhysicsEH]

Thanks. We plan to make more and I hope they are just as helpful.

[WatchThemForFun]

Wow... Very helpful!

[farshid99]

mr. caruana ... my favorite teacher of all time

[PhysicsEH]

Wow, thanks!