Final answer:
Reality can be both objective and subjective. When two black holes collide, they merge to form a single, more massive black hole. Gravity waves are ripples in spacetime caused by accelerating massive objects. If a ball has greater mass than the Earth, both the ball and the Earth will attract each other, but the acceleration of the Earth will be negligible compared to the acceleration of the ball.
Step-by-step explanation:
1. Reality can be both objective and subjective depending on the context. In physics, reality is often treated as objective, meaning it exists independently of an individual's perception. However, in fields like philosophy or psychology, reality can be seen as subjective, as it is shaped by an individual's experiences and interpretations.
2. When two black holes collide, it results in a merger or coalescence of the black holes, creating a single, more massive black hole. This process releases a tremendous amount of energy in the form of gravitational waves.
3. Gravity waves or gravitational waves are ripples in the fabric of spacetime caused by the acceleration of massive objects, such as the motion of black holes or neutron stars. They were predicted by Einstein's theory of general relativity and were first directly detected in 2015.
4. The gravitational force between two objects is determined by both their masses and the distance between them. If a ball has a greater mass than the Earth, the gravitational force between the ball and the Earth would cause them to attract each other. However, since the Earth is much more massive than the ball, the acceleration of the Earth towards the ball would be negligible compared to the acceleration of the ball towards the Earth.