Physics Lesson: Algebraic Addition of Vectors for high school

[SmuggleFox]

wow how did you do those calculations in your head..

[lagdance]

wow my brain is now at rest...

[jcpike23]

Thank you this really helped me :)

[superpratik1994]

wow you're actually good at teaching this. i understood it all, thanks for uploading it :)

[MrGreatMonkey]

Never heard of trigonometry?

[mocherla1]

thak you so much for your wonderful videos, you made physics very simple and easy

[PhysicsEH]

@mocherla1 Thanks, glad to help.

[Gingerpotterwhovian]

Your videos with vectors are fantastic! I'm in AP Physics B: Mechanics and this was great for me to have some sort of review from my previous classes going into the vectors/projectile motion unit. I was wondering, do you know of any good websites/resources with good practice concept questions? Mathematically I can usually figure things out but non calculator conceptual questions usually hurt me. Also, do you have anything on cross/dot products? thanks for your help again, the videos are great!

[PhysicsEH]

@Gingerpotterwhovian I'm glad the videos helped. I don't have any on cross/dot products or other resources. Sorry about that but I hope you find the rest of our videos help. Best of luck with your course.

[PhysicsEH]

@iheartbull Glad we could help. Best of luck with your course

[jmlansang]

u save me



[PhysicsEH]

@jmlansang Glad to help.

[Kyoko12337]

You explain this so well. I get it now thanks! =D

[PhysicsEH]

@Kyoko12337 Thanks for the comment, Glad to help.

[PhysicsEH]

@xLogophilex Thanks for taking the time to let us know we helped. Best of luck with your course.

[PhysicsEH]

@xLogophilex Thanks for taking the time to let us know we helped. Best of luck with your course.

[PhysicsEH]

@xLogophilex Thanks for taking the time to let us know we helped. Best of luck with your course.

[kevin22GG]

Thanks for the help!!!

[PhysicsEH]

@kevin22GG Thanks for taking the time to let us know we helped. Best of luck with your course.

[PhysicsEH]

@kevin22GG Thanks for taking the time to let us know we helped. Best of luck with your course.

[frostydank1211]

THANK YOU, THANK YOU, THANK YOU! NOT ONLY IS THIS A GREAT LESSON..... BUT YOU REMIND ME OF ROBIN WILLIAMS AND MY GRANDFATHER AS WELL! (No offense intended about the grandfather thing)

[PhysicsEH]

@frostydank1211 Hi. Thanks for the best comment ever. Glad we could help.

[PhysicsEH]

@frostydank1211 Hi. Thanks for the best comment ever. Glad we could help.

[MineCraftVideosETC]

Thank you so much

[PhysicsEH]

@MineCraftVideosETC You are very welcome. Glad to help.

[kara12]

OMFG THIS ACTUALLY EASY THANK YOU FOR BREAKING IT IN STEPS I LOVE YOU

[PhysicsEH]

@kara12 Wow, What a great comment. Thanks, you made my day. Glad we could help and best of luck with your studies.

[MrShnazer]

when adding vectors if your first magnitude is in the negative quadrant does it start with a negative sign. thank you

[PhysicsEH]

@MrShnazer We don't do this in terms fo positive and negative quadrants. Break the vector up into components then use the same sign convention that you use for the x and y axis. Any of the components that are up or to the right are positive. Any components that are to the left or down are negative. You can see this for the components of the 7[E30S] the 6.1 is to the right so it's (+) and the 3.5 is down or (-). For the 3[N60W], the 2.6 is (-) and the 1.5 is (+). I hope this helps.

[PhysicsEH]

@Gogreenfor2010 Hi. Thanks for letting us know. We love to hear that people find it easy to follow our videos.

[matticus408]

will you come teach at my school?

[PhysicsEH]

@matticus408 Thanks for the compliment!

[chrlmack]

thanks dude you make it easy

[PhysicsEH]

@chrlmack Great. Thanks for letting us know. Glad to help.

[Steelexercise101]

why didn't you need to break in the components of 5 (N)? 

[PhysicsEH]

@Steelexercise101 You break components along the x and y axis. Since the 5N was north it has only a y component and no x component. All of the 5N is up along the y axis so there is no x piece to it. I hope this helps.

[XxStopherLixX]

i also liked it. :D

[XxStopherLixX]

damn dude ur beast. my teacher sucks at teaching. any student will be lucky to have you. may god bless you bro ;)

[PhysicsEH]

@XxStopherLixX Hi. Thanks for the great comment. You made my day.

[amirshirafkan]

if you fail at becoming a physicist, then become a physics teacher

[PhysicsEH]

@amirshirafkan That may be true. I hope you did find the videos helped in some way though.

[yasirqaisar]

why did you like this video?

[livemixtapes]

*QUESTION*

at 1:40 sec, why did you draw the trigangle like that? Why couldnt it be in inverse? Meaning that why wasnt the bottom side drawn on the bottom rather than the top?

[PhysicsEH]

@livemixtapes I could have drawn it to the left first then up. The result would have been the same 2.6 left and 1.5 up. The reason I drew up first then to the left is because by doing this I used the 60 degree angle. If I drew the components to the left then up, I would need to find the angle for that triangle (which is not complicated) (90 – 60 = 30 degrees). With the 30 degrees, the left vector would be 3cos 30 = 2.6 left and up would be 3sin30 = 1.5 I just went with the most obvious triangle

[henryscy]

You are definitely better than my lecturer. Thanks for your help...

[nonameddog]

Thanks a lot! great explanation!

[PhysicsEH]

@nonameddog Hi. Glad to help.

[PyroPrincess22]

OMG I GET IT. YEEESS!!!!!!

[MrFarosco]

thanx a billion...it really helps me

[ringmybells23]

wow ur great at explaining this

thank u very much :D

im going to start my physics 12 course this year,

so i thought i should prepare myself :)

and thanks to you, i am now understanding this

[bellanei]

thank you

[sodr2]

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