How long does it take for gravitational effects to work?

[IEP617]

Imagine a ball being tossed into 'the air'. At its peak, the ball has a velocity of 0(m/s), but how long does it actually have this velocity for? --> Neglecting the effects of air-resistance.

Obviously the ball undergoes constant 'g' the whole time, but the answer to my question doesn't relate to that. I'm seeking to understand / learn how long the ball actually hangs in mid-air; e.g. 0.01s ? 0.001s ? etc.

I sincerely appreciate everybody that contributes here, but I am seeking a 'what you know for a fact' reply, not 'what you think is correct'; this is why I have classified the question as 'Advanced'.

If anybody can point me to some experimental results, I would be greatly appreciative.

 

[Drakkith]

Imagine a ball being tossed into 'the air'. At its peak, the ball has a velocity of 0(m/s), but how long does it actually have this velocity for?

A continually accelerating object has a single velocity for an infinitesimal amount of time. I'd call it 'zero', but I feel the mathematical concept of infinitesimals works better when talking about a continuous process since calculus, the mathematics of continuous change, is exactly what we need to analyze this kind of problem.

 

[IEP617]

Thanks for that, I appreciate your reply ... Let me give you a bit more meat around the problem I'm investigating. Let's imagine that we have some apparatus that can eliminate 99.9% of 'g'; let's call it an anti-gravity machine ... But, let's first imagine that the gravitational acceleration field of the Earth can be modeled as 'some kind' of ElectroMagnetic phenomenon. So, 'The Earth' is beaming its gravity into space like an RF generator; remember, this is all imaginary, I'm not referring to the hard-science documentaries like 'The Avengers' etc.

Now let's imagine that we have an "anti-gravity" apparatus that broadcasts an EM Wave that can destructively interfere with the Earth's EM Wave (its 'gravity' wave). Imagine that I can only eliminate 99.9% of the Earths gravitational acceleration wave (every 0.13 seconds for example). With the remaining '<1%', can I 'somehow' keep Thanos' spaceship floating because it takes a certain amount of time for the uncancelled '<1%' gravitational acceleration wave to act? ... Get me ?

For example: if the period between pulses is 0.13(s), but it takes 0.001(s) for real-world gravity to act; do I have a problem ?

 

[Vanadium 50]

Once you invoke new laws of physics, you can get any answer you like.

 

[PeterDonis]

Moderator's note: Thread level changed to "I".

 

[PeterDonis]

this is all imaginary

Which makes it out of scope for discussion here. We can't answer questions about what the laws of physics predict in an imaginary scenario that violates the laws of physics.

Thread closed.