Objects Moving Apart Under Gravity?

Thread starter gonegahgah
Start date Oct 17, 2008
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Gravity

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In a vacuum, two balls shot straight up with different initial velocities will increase their distance apart as the higher-velocity ball ascends longer and falls later. However, this distance does not accelerate; it increases at a constant rate throughout their trajectories. The lower velocity ball, while falling back to Earth, will not accelerate away from the higher velocity ball, as both experience the same gravitational acceleration. The discussion also touches on cosmological implications, suggesting that similar principles might apply to the universe's expansion or contraction, but emphasizes that the gravitational effects differ significantly in cosmology compared to the simple two-ball scenario. Overall, the distance between the two balls increases steadily but does not accelerate away from each other.

Oct 23, 2008

Idjot

gonegahgah said:

Lol. Makes for amusing reading :)

Don't grasp your physics too firmly or it might pop your eyes out!

Is that getting closer?

HA!

I've got it! :) Thanks for your patience gonegahgah. You've been more than generous with it.

And thank you too Kotex. I may be goofing around with you because you came off so arrogant with your "puking entrance", but in fairness to you, it is obvious that you know alot about balls.

Seriously, though I totally understand everything that's been explained to me here and I'm grateful to be allowed to sputter layman's questions and receive expertly tutored answers.