Scalars, Vectors, and Vector Operations

What are all these funny little arrows? They're vectors! And we will use them to represent every single force we discuss in physics, so we need to know how to draw them, add them, subtract them, split them up into X and Y components, the whole nine yards. We also need to know the difference between vectors and scalars. So let's get this stuff taken care of before we dive into the physics!

Check out "Is This Wi-Fi Organic?", my book on disarming pseudoscience!

[jojaprojajoja]

If I had math and physics teachers like you in high school, I might not have majored in literature.

[realityisenough]

This guy deserves more views. I've gone back to University after teaching ESOL overseas for 10 years, and COMPLETELY lost in physics coz they teach like we remember all the basics out of highschool. This is so simple and easy to understand, and thorough (for such a basic overview style).

Cheers mate, I'll turn my addblock off on your vids.

[upandatom]

I found myself singing your jingle the other day haha. catchy stuff!

[ambiance]

Thank you for these videos! I've been having so much trouble in my 200 level Physics class, it's been driving me INSANE! These are a great overview of key topics!

[sccm]

I'm so excited to start physics this summer. Wish me luck!

[tamiajameson]

This guy is officially my new best friend, this video helped me so much.

[jonathan]

I'm a college freshman student and I'm about to take the very first physics course in my life. I never took physics in high school and I dropped math eventually.
I was thankfully able to understand the differences between vectors and scalars from this video, as well as trigonometry. Calculating vector components sounds a bit complicated to me though. I still have an interest in astronomy and physics, and this channel is helping me understand the main concepts of my classical physics class. Just currently praying that this class won't end up in disaster for me.
Thanks Dave.

[Joe-dpcg]

as a high school student teaching myself physics over the summer, I wanted thank you for everything you offer on your channel! this is far better than khan academy for my style of learning. My goal in life is to never stop learning, and you have made that goal far easier to obtain! thank you Professor Dave!

[manusharma]

Do you teach in a university. I mean what do you do apart from these extremely great video lectures ?
By the way, your lectures are extremely great and I can confidently tell that you are one of the greatest teachers in the world.

[vasiliylukashonok]

Hello! English isn't my native language, but i want to study abroad, so i should learn subjects in English, and here you channel really helps! Thaaank you so much!!!!

[heyvatss]

If u can’t donate him money pls do watch full that he could get some money..🤗 I watch full ads ...As he os a grt teacher

[sabihabanu]

Thank you Professor Dave !!! It helped me alot !! Plz make a video on cross product and dot product of two vectors !! It would be a great help !!

[stephaniea]

Professor Dave is my new physics professor! Thank you for your videos, they have helped tremendously!

[Nikkeishajk]

love your intro music, never change it EVER!!!

[samhooker]

The light in the dark of my tunnel is the professor dave to my physics class

[MovieClips-rglr]

He makes me feel like not only smart people can understand physics, & the content doesn't seem like oversimplified teachings, thanks.

[mattgraves]

Nice!!
Thanks man!
Professor Dave rocks!
I am a software engineer... and sadly,
5 minutes ago I didn't know what a vector was or a scalar lol. Now I know how to find sin, cos, tan.
5 minutes ago I didn't know what those terms even meant.
... of course I knew at one point but long forgot

[Aaron]

If anyone cannot follow the SOCAHTOA mnemonics device, it might be better to memorise this mnemonic device:

*S*ome *P*eople *H*ave
*C*urly *B*rown *H*air
*T*ightly *P*ulled *B*ack

This denotes:
Sin θ = Perpendicular/Hypotenuse
Cos θ = Base/Hypotenuse
Tan θ = Perpendicular/Base = sin θ / cos θ

[Dargotsauce]

This video made things so much simpler than in my physics class

[jordanh]

Thank you so much Dave for making these videos. You are an amazing person for making these