Gravity
As for the science behind the action, we know that Isaac newton defined gravity as a force -- one that attracts all objects to all other objects. We know that Albert Einstein said gravity is a result of the curvature of space-time. These two theories are the most common and widely held (if somewhat incomplete) explanations of gravity.
In this article, we'll look at Newton's theory of gravity, Einstein's theory of gravity and we'll touch on a more recent view of the phenomenon as well.
Although many people had already noted that gravity exists, Newton was the first to develop a cohesive explanation for gravity, so we'll start there.
see video on this link:
http://science.howstuffworks.com/environmental/earth/geophysics/question232.htm
One example of an unseen source exerting a force is gravity. Gravity is a force that pulls objects towards each other, such as the Earth pulling objects towards its center. While it is unseen, its effects can be observed in everyday phenomena like an apple falling from a tree.
One example of an unseen source exerting a force is gravitational force. Gravity is an invisible force that pulls objects towards each other. It is what keeps planets in orbit around the sun and causes objects to fall towards Earth.
A push is a force applied by one object on another in the direction away from the object exerting the force. A pull is a force applied by one object on another in the direction towards the object exerting the force.
The push or pull of one object on another is called by the same name in physics. That term is "force."When one object pushes or pulls another object, this is called force. For example, when a person writes, they are exerting force on the pen.
The unseen force is just a gust of wind that occurs if you stay on one floor too long.
Whether they are, or are not, exerted depends on the physical situation. For example, magnets won't lose their magnetic force if you make them touch. And if objects stick together, they are certainly exerting a force on one another.
The object exerting the most gravitational force on you is the one closest to you with the most mass, which is typically Earth.
Without context, one can only assume that gravity is exerting a force on any object that is moving downward. (Gravity is still exerting a force on a coin that is not moving, for example one stationary on a tabletop, but we don't spend a lot of time worrying about it.)
Pulling
The desk is exerting a gravitational force, equal in magnitude but opposite in direction to the force of gravity acting on the book. This force has a magnitude of 4.9 newtons (N) downwards, as gravity pulls objects with a force of 9.8 N/kg and the book has a mass of 0.5 kg.
One example of pacification is when a government or military force uses persuasion, negotiation, or force to suppress or reduce conflict in a particular region or among a specific group of people. This can involve efforts to establish peace, resolve disputes, or restore order through non-violent means or by exerting control over a population.
The Unseen One.