How fast are you moving right now? - Tucker Hiatt

"How fast are you moving?" seems like an easy question, but it's actually quite complicated -- and perhaps best answered by another question: "Relative to what?" Even when you think you're standing still, the Earth is moving relative to the Sun, which is moving relative to the Milky Way, which is...you get the idea. Tucker Hiatt unravels the concepts of absolute and relative speed.

Lesson by Tucker Hiatt, animation by Zedem Media.

[lu]

Girlfriend: "I think we're moving too fast."
Me an intellectual: "Relative to what?"

[Mackeye_]

every time I watch Ted Ed, a nuke goes off in my brain

[Xenon]

TED-ed: "Space is not an ocean, it has no substance as water does."


Space: "Hold my Higgs-Boson."

[PeridotFacet-FLCut-XG-ogxx]

You know how fast you're moving?

Relative to what?

To that sign on the road that says the speed limit!

[alphaapple]

For those who are familiar with the metric system:
At 0:20: "So, a second tempting answer is, 30 km/s around the Sun."
At 2:16: "Earth's speed is 30 km/s relative to the Sun."
At 2:25: "Your speed is zero relative to your easy chair, but depending on where you sit, it is hundreds of, if not over a thousand, kilometers per hour relative to Earth's center."

[insertkahootname]

Just got this as a notification

5 years after its posted

Thank you YouTube

[DjGreydanus]

In Star Trek, warp speeds are defined relative to light speed through a vacuum, which according to relativity is an absolute speed.

[BobbyBosler]

I’m curious, does this mean that the speed of light is only a relative measurement too? If not, how can we ever get a consistent measurement of it, seeing as we are moving so quickly through the universe.

[riaelyna]

This is so humorously amazing, and I live for this kind of narratives 💜

[datboyed]

I love these kind of videos, the animation, and the examples that fully explain the question instead of just answering it.

[jerrygundecker]

I still want to know how fast I'm moving.
He never did answer the question. Dang!

[georgebernstein]

It would have been nice to know what speed we were going relative to the things you mentioned.. Virgo cluster etc..

[Eric.Morrison]

This was a relatively good presentation.

[smartguy]

''Some things are absolute''
War. War never changes.
5 days.

[dramida]

Latest update: Space is something. It can be bend and stretched and has infinite energy per volume unit. It is also expanding faster and faster ( accelerated) at an actual rate of 71km/s for each megaparsec (1 parsec= 3.2 light years)

[OnPhysics]

A more accurate answer, from a relativistic perspective: Everything moves at exactly the speed of light through the 4 dimensions of space and time. The faster you are moving through the 3 spatial dimensions, relative to a reference point, the slower you move through time from that reference. Things are still relative, but the vector always adds to the speed of light. At least, that's one way to always answer "How fast are you moving?"

[LordEmilous]

space is not a void.... it's not empty.... it maybe doesn't have any physical substance or mass, but it's not nothing, it's not completely empty :)

There are many energies involved in the creation of the universe.
I mean, if space was nothing, then gravity wouldn't exist, since planets bend both space and time...

[Wolfenrahd]

Let's just say you were somehow able to go to the edge of space. And let's just supposedly say that you were able to survive. What would exactly happen? Is there anyway to escape this boundary? What would be on the outside of space? If space is expanding, then is there something bigger than space? What is space expanding into? What if it really isn't space, but the space outside of space is the true space, or maybe space is expanding into the void. But if there are boundaries, than wouldn't there always be something beyond those boundaries?

[pengdu]

For people who dont understand, if you are sitting still on a chair, you are not moving relative to your chair, but you are moving in different speed relative to the people walking or driving outside

[michaellwalker]

That analogy of space to a hole is the best explanation of what space is that I’ve heard.