Treating units algebraically and dimensional analysis | Algebra I | Khan Academy

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Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It's also seen as a "gatekeeper" subject. Once you achieve an understanding of algebra, the higher-level math subjects become accessible to you. Without it, it's impossible to move forward. It's used by people with lots of different jobs, like carpentry, engineering, and fashion design. In these tutorials, we'll cover a lot of ground. Some of the topics include linear equations, linear inequalities, linear functions, systems of equations, factoring expressions, quadratic expressions, exponents, functions, and ratios.

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[jakeambrose]

The term " DIMENSIONAL ANALYSIS " should be emphasized more. Very cool stuff.

[MeliaMilhorat]

I only understood the first 3 minutes, then I was lost in math.

[HBK-yuer]

Best YouTube teacher ever, keep continuing.

[Zoe-zhlx]

thank you but i still do not understand ;(

[abiramjeyanthan]

I had understood the process on how to get the answer but confused on why at 4:12 do you have to write 3600 sec over 1 hr to get the answer when simply just have timesed 5 m/s by 3600 s.

[itzcryptecz]

When converting from meters to kilometers, how do u know to put the 1 for km and not for meters?

[abhiramsridhara]

but why are you using the word rate? You could've called it speed

[yepimbatman]

Literally do not understand this at all :(

[lizbitclark]

I don't understand why the answers wouldn't be 50 meters per seconds instead of just 50 meters can someone explain please.

[sarahbadumedi]

please help me find the dimensions of k in the formula of workdone on an external agent given by the formula W=-kx^2

[jessicafredrick]

okay love the vids but not sure why it drives me nuts he repeats everything before writing them down

[mohammedmudassirinamdar]

rest of the world rate means speed pls dont get confused

[mk-gcfj]

This is such a bad explanation. The Organic Chemistry Tutor has a much better video on this topic with lots of practical examples.