Why distance is area under velocity-time line | Physics | Khan Academy

How long of a runway does an A380 need? Created by Sal Khan.

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[GGamersOfTurkey]

To be honest, you teach better than most of the teachers out there and by just watching this ten minutes long video, I can pretty much comprehend everything that is taught about this subject.. Well done sir, well done.

[thedogdogification]

When I was a student I struggled with these concepts a great deal. I passed my classes with a lot of hard work, but deep down I didn't truly _understand_ them. I just tried to copy the equations my teachers used and hoped for the best. But now, thanks to you, many years later I'm grasping these concepts at last. Thank you.

[theflaggeddragon]

This has really helped explain integrals because i just started integral calculus and I didn't understand the relation between the antiderivative and area but this explains it all. Thank you Sal

[saifdin]

Oh my god, it took me decade to understand this, i searched everywhere to get my doubt cleared related to area under velocity time graph for uniform acceleration, every time the actual value was larger than the value obtained from graph, and it always banged my head but today I'm very grateful, may Almighty bless you🙏

[BoZhaoengineering]

It is the fundamental of algebraic based physics. A sturdy understanding help you learn the rest. I wish I could have met a excellent teacher like this guy in my high school physics lecture.

[victorytomv]

This is an exciting study, understanding the mathematics behind everyday events that we walk by and don't stop to smell the roses. Thanks, great job.

[takoats]

Thank you, I’ve been sick for the past two days and my physics teacher posted that we have a test the next day on this (which I haven’t learned because I was out). Thank you for teaching me this I feel 10000% more confident now 🙏.

[seriously-]

I am happy I found you just in time beautifully explained ✨

[afterift]

This helps a lot! Why cant you be my teacher?!?

[sotoloham]

Most teachers cant explain this topic and this is such a wonderful video by Khan academy

[Phymacss]

You explained in 10 minutes what my teacher couldn’t in a week. I have two words for you, THANK YOU!!!

[eibblinchurchill]

THANK YOU. I never knew how to do this, you've saved my life for real!!

[Thadoezaw]

Thank you for your lessons sir. i'm preparing for my GED exam; it help me a lot to improve my knowledges.

[Rayden]

wow you did a much better job at explaining this than my teacher. She briefly told the class about this and left basically everyone confused

[hobooo]

I think i don't know any thing about physics but by these videos i can understand what the physics is

[kroovyandcal]

You should have written down the y=mx+b equation on this one and shown how acceleration = m = change in x/change in y

[kevinbs]

Or just know the velocity is the 1st derivative, and acceleration is the 2nd. So integrating one time is the displacement, which is the integral of the graph, which is the area under the curve.

[nandinisingha]

This was very helpful of You and Dumb of me who can't figure this simple thing

[amishmittal]

I like how the india khan academy took the same measurements n direçtions to explain

[lewischangNYY]

I use it to prepare pilot test for China Airlines (aka. Taiwan Airlines). It's help me a lot.
And I appreciate a lot. I'll do my best for it, cause I want help someone who need help.
(At 8thOct2016)