Treat all objects as a point. Gravitational constant = 6.67384 × 10^-11 m^3 kg^-1 s^-2 Acceleration of the object is 1 ms^-2
Imagine there are 2 identical objects with mass of 1 Kg each is separated by a distance denoted by a letter "d". In this setup there is only a force acting on both objects and is causing both objects to accelerate towards each other, assuming no external force is involved. The force pulling both objects towards each other is the gravitational force that is acting on each other, the gravitational force is stronger when "d" is smaller. Agree so far?
As the object is moving we can calculate its kinetic energy, this value is positive. The faster the object moves the more kinetic energy it has.
Since both objects are separated by a distance "d", we can also calculate their potential energy and we all know that this value is negative.
Law of conservation of energy
This is where I'm totally lost! when two objects fall towards each other from rest, their potential energy decreases at the same time their kinetic energy increases. If the value of potential energy is negative... in order not to violet the law of conservation of energy, there must be a negative value to balance out the equation so I guess it have to be the gravitational energy.
Q1. Is negative energy related to gravitational energy?
Q2. Is the negative energy produced in Casimir effect related to gravitational energy?
Q3. It seem quantum vacuum cannot be zero, there must be a field and can it be the hypothetical force carrier of gravity a.k.a graviton?
P.S. I have recycled the original question and posted a new one instead, therefore all comments and answers which may appears irrelevant are actually based on the old question.