Quote (card_sultan @ Oct 24 2016 09:53am)

I'm impressed that you know that the word acceleration has a English meaning of "speeding up" and a physics meaning of moving.

nice basic understanding - except the earths orbit around the sun is not circular but elliptical - nor is it theorized that the earth travels at the exact same speed all the time -wonder how that happens - does the suns gravity change - cause surely its mass doesn't change? hmm you should look that up.

Also - i was watching a documentary on the science last night talk about the Black Knight Satellite, so these satellites (and the ISS) are traveling at 17,000 mph - consistently - they dont need a force to keep pushing them right, they got that force because rockets pushed them into space and there is no fiction - its just a vacuum of space right? So when an Astronot goes for a space walk - he can just float freely on a string because he is also going 17000 mph right?

So why when they drop a tool or something - why does it not simply travel along with them and goes flying back into space because that object is also going 17,000 miles an hour and there in a vacuum?
The iss has no propulsion system, so why do some objects stay at 17,000 mph speed in orbit and other objects just float around freely like they are in water and some object just fly away at lightning speed? Why were earlier space stations always worried about orbital decay and now its just fixed i guess - perpetual continuous orbit is possible - even though it doesn't work like that in nature, joke is what it is.

Quote (card_sultan @ Oct 24 2016 12:53pm)

I'm impressed that you know that the word acceleration has a English meaning of "speeding up" and a physics meaning of moving.

nice basic understanding - except the earths orbit around the sun is not circular but elliptical - nor is it theorized that the earth travels at the exact same speed all the time - wonder how that happens - does the suns gravity change - cause surely its mass doesn't change? hmm you should look that up.

Also - i was watching a documentary on the science last night talk about the Black Knight Satellite, so these satellites (and the ISS) are traveling at 17,000 mph - consistently - they dont need a force to keep pushing them right, they got that force because rockets pushed them into space and there is no fiction - its just a vacuum of space right? So when an Astronot goes for a space walk - he can just float freely on a string because he is also going 17000 mph right?

So why when they drop a tool or something - why does it not simply travel along with them and goes flying back into space because that object is also going 17,000 miles an hour and there in a vacuum?
The iss has no propulsion system, so why do some objects stay at 17,000 mph speed in orbit and other objects just float around freely like they are in water and some object just fly away at lightning speed? Why were earlier space stations always worried about orbital decay and now its just fixed i guess - perpetual continuous orbit is possible - even though it doesn't work like that in nature, joke is what it is.

Quote (Santara @ Oct 24 2016 01:26pm)

Why would you be impressed? I actually have a grasp on the fundamentals of physics.

Arcs can describe an expanse of an ellipse as well as a circle. You are not passing along any hidden knowledge, you special snowflake you. Of course the Earth's orbit is an ellipse, that's why they always say the distance to the sun varies from about 91 million miles to 93 million. You wonder how we travel at different speeds when the distance between the sun and the Earth isn't constant?

You admit to the Earth orbiting the sun? How does this orbit occur without gravity?

Because when they drop a tool, an un-resisted force has been placed onto the tool, so even lightly brushing something will cause it to moved. AND there will be an opposite reaction from the tool dropper, though not really noticeable. So you'll move 17,001 miles per hour and the tool will slow down to 16,699. It's perfectly easy to lose things in orbit.

Quote (card_sultan @ Oct 24 2016 06:47pm)

Wow are on the short bus still - how could they "drop" a tool? there is no gravity, (micro gravity is really none) so if the AstroNots bump into the space station they will wildly drive it spinning out orbital speed and correct direction to never see another satellite{joke}, and quite possibly immediate orbital decay spiraling back to earth. Cool Story.

Quote (majorblood @ Oct 24 2016 12:14pm)

read the bold and understand that the force due to gravity is inversely proportional to the radius

to the other part you lack an understanding of momentum

Quote (Santara @ Oct 24 2016 01:51pm)

Because in this case "drop" is a euphemism for "losing grasp of." Forgive me for being succinct and using YOUR OWN WORDS. You should just kill yourself, and save someone the problems when they decide to do it for you.

Quote (card_sultan @ Oct 24 2016 04:08pm)

Then if you understand exactly what im saying is that if gravity was the reason and gravity is a constant force, the orbits should be entirely circular - having the earth travel at different speeds is also a misunderstanding of momentum because wtf could make the earth consistently speed up or slow down in a vacuum at exact times in the yearly cycle? - in fact i think most all of the planetary orbits are elliptical while all moons are circular - can you explain the difference why? Is planet gravity different then sun gravity?
Could you explain why a comets orbit is highly elliptical with most of it orbit is far away from and going to the sun for like a 100 years - but the sun is traveling at 500,000 miles an hour away from it in the spiral of the milky way, multiply that by 100 years and it has no logical reason to return on the exact same path.

Quote (card_sultan @ Oct 24 2016 07:08pm)

Then if you understand exactly what im saying is that if gravity was the reason and gravity is a constant force, the orbits should be entirely circular - having the earth travel at different speeds is also a misunderstanding of momentum because wtf could make the earth consistently speed up or slow down in a vacuum at exact times in the yearly cycle? - in fact i think most all of the planetary orbits are elliptical while all moons are circular - can you explain the difference why? Is planet gravity different then sun gravity?
Could you explain why a comets orbit is highly elliptical with most of it orbit is far away from and going to the sun for like a 100 years - but the sun is traveling at 500,000 miles an hour away from it in the spiral of the milky way, multiply that by 100 years and it has no logical reason to return on the exact same path.

Quote (AiNedeSpelCzech @ Oct 24 2016 07:11pm)

I hope some of you at least feel shame about this. :(

Quote (Santara @ 24 Oct 2016 17:40)

Nope. I'd splain it to you, but you're not keeping up with the baby steps.



Finally, A Thread For Winners

We're just keeping with the lofty heights of the subject of the OP.