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/sci/ - Science & Math

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7540517 No.7540517 [Reply] [Original]

If I throw a rock up in the air, does it become a natural satellite for earth?

>> No.7540520

If you can throw it hard enough for it to enter into orbit.

>> No.7540523

Only if it orbits.

>inb4 hurr durr but its technically orbiting for a short amount of time hurr

No

For something to be classified in a stable orbit, it must have made a rotation around the earth with an eccentricity of 0-1. A rock thrown 10 feet in the air and fell back down was never in orbit. It was in freefall.

>> No.7540541

>le epic semantics thread

>> No.7540548

Given you're tying to put it into orbit though artificial means, probably not.

>> No.7540553

Don't you have to first go high, then give a burn sideways?

>> No.7540566

>>7540523
I agree with you that the rock isn't in orbit but all orbiting objects are technically in free fall as well.

>> No.7540581

>>7540566

Please read and stop talking crap.

>> No.7540594

>>7540581
dahell you talking about? he said the rock isn't in orbit it is in free fall.
satellites are also in free fall. So that previous sentence is basically " the rock isn't in orbit it's in orbit".

Just pointing out that being in orbit is just being in a state of freefall where you are constantly 'falling past or over' the earth, or whatever

>> No.7540597

>>7540594
No hes trying to defend a stupid fucking point that cant be defended ie OPS's original crap post.

Yes I know that objects in orbit are in freefall, but hes trying to deviate. Im shutting this shit down

>> No.7540634

>>7540523
>It was in freefall.

All orbiting objects are in freefall.

>> No.7540916

>>7540581

Shut up fag, there was nothing in that post that was irrational or incorrect and he added something to the conversation.

>> No.7540918
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7540918

>>7540523

Objects in orbit are in free fall. That's how they sustain orbit.

>> No.7540919

Would a sub orbital path that almost travels a complete orbit count?

>> No.7541077
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7541077

>>7540919
>would a non-complete orbit count as complete orbit??????
figure it out for yourself dude

>> No.7541126

>>7540634
That doesn't imply that all freefalling objects are in orbit.

>> No.7541139

>>7540517
>If I throw a rock up in the air, does it become a natural satellite for earth?

Not in the common usage of those terms. But actually yes - it's just an orbit that intersects with the surface.