Question

Collect more information about the various forces that are used in our day -to-day life.

Answer 1

Special forces and special operations forces are military units trained to conduct special operations.[1][2][3] NATO has defined special operations as "military activities conducted by specially designated, organized, trained, and equipped forces, manned with selected personnel, using unconventional tactics, techniques, and modes of employment".[1][4]

Special forces emerged in the early 20th century, with a significant growth in the field during the Second World War, when "every major army involved in the fighting" created formations devoted to special operations behind enemy lines.[5] Depending on the country, special forces may perform functions including airborne operations, counter-insurgency, counter-terrorism, foreign internal defense, covert ops, direct action, hostage rescue, high-value targets/manhunting, intelligence operations, mobility operations, and unconventional warfare.

In Russian-speaking countries special forces of any country are typically called spetsnaz, an acronym for "special purpose". In the United States the term special forces often refers specifically to the US Army's Special Forces, while the term special operations forces (SOF) is used more broadly for these types of unit.

Answer 2

Everyday forces are also called macroscopic forces, these are forces commonly observed in day-to-day life.

1. gravitational force: the pull toward the center of the Earth due to gravity (an apple falling from a tree)

2. normal force: the perpendicular force that comes from two surfaces touching (the upward force a person's hand feels when pressing down on a table)

3. frictional force: the resisting force from contacting materials or fluids trying to move with respect to each other (the resistance a person's hand feels when dragging it across a rough table)

4.air drag: refers to the force acting against the motion of any object moving with respect to a surrounding liquid or gas and is a type of frictional force (skydivers using parachutes to slow them down)

5. tension: describes the force felt from the end of a string, chain, or any similar object being pulled.

6. spring force: The force from changing the shape of an object is often called the spring force. Usually this term is only used if the object springs back when it released; for more information please see elasticity vs plasticity

7. thrust: This force pushes jets and rockets forward

8. buoyant force: the force from the volume of a displaced fluid that pushes against the gravitational force.

9. electric and magnetic forces: These forces are fundamental forces

All of these forces are measured in newtons (N). As these forces push and pull on objects they affect the motion of the objects. These forces push through some distance in order to do work on a system.