Force
* All forces are due to the underlying interactions of the particles
  - related to the mass of the object on which they are acting
* Any force changes a body or a body's position.
* Every force has an equal and opposite force
  - opposite reaction
* Many forces affect the behavior of fluids at interfaces.
* Many forces are contact forces , i.e. they act only while two objects are physically touching
  - involved in weathering and erosion, including both natural and man-made causes
  - can affect the structure of a crystal
  - shape and influence the development of children from conception through adolescence
* Most forces act on atoms
  - kg mass
  - layers
* Most forces affect different materials
  - growth
  - motion
  - zooplankton growth
* Most forces are caused by gravity
  - created by movement
* Most forces are exerted by air
  - magnets
* Most forces are generated by external fields
  - magnetic fields
  - flight muscles
  - skeletal muscles
* Most forces cause acceleration forces
  - external torque
  - horizontal displacement
* Most forces cause net external torque
  - waves
* Most forces change acceleration
  - over time
  - rotational inertia
  - come from gas pressure
* Most forces contribute to energy
  - potential energy
* Most forces create acceleration
  - rotational acceleration
* Most forces depend on magnitudes
  - upon size
* Most forces drive evolution
  - population growth
* Most forces equal mass time acceleration
  - x acceleration
  - exceed energy
* Most forces generate destructive power
  - electricity
* Most forces have energy
  - equal size
  - properties
* Most forces increase energy
  - kinetic energy
  - mechanical energy
* Most forces increase total energy
  - influence motion
  - involve in collisions
* Most forces move combustion air
  - flue gases
  - produce torque
* Most forces pull particles
  - small particles
  - push electric current
* Most forces relate to charge
  - electric charge
  - stationary electric charge
* Most forces result in energy
  - stimulate bone growth
  - transfer energy
* Some forces act on bar magnets
  - bones
  - environments
  - joints
  - liquids
  - mechanisms
  - rings
  - sediments
  - surface wind
  - water
  - wheels
  - through physical contact, while others act at a distance
  - upon surfaces
* Some forces affect earth
  - frictional resistance
* Some forces apply to elastic materials
* Some forces are caused by interaction
* Some forces are exerted by earth gravity
  - radiation
  - solar radiation
* Some forces are generated by charge
  - engines
  - motors
  - pistons
  - wings
* Some forces are produced by engines
  - jet engines
  - arise from heat
  - associate with static electricity
  - can act from a distance without actual contact between the two interacting objects
* Some forces cause circular motion
  - earthquakes
  - hurricanes
* Some forces change energy
* Some forces come from contraction
* Some forces convert energy
  - create wind
* Some forces decrease energy
  - depend on friction
  - exceed weight
  - have sunlight
* Some forces move matter, such as heat and sound
  - oppose gravity
* Some forces produce motion
  - pull water
  - push electricity
  - simulate gravity
* Some forces use friction
* act in a particular direction and have sizes dependent upon how strong the push or pull is.
  - cars
  - objects and the forces can produce certain effects upon the object
  - otherwise free to move objects, changing their velocities
  - the bonds between atoms, changing the molecular structure of a substance
* acting on spinning bodies result in some peculiar acrobatics.
* affect components
  - impact
  - motion in a variety of ways
* affecting action are forces affecting motion.
* also have directions as well as magnitudes
  - scale linearly
* always act in pairs, on different bodies, and in opposite directions
  - come in pairs called action-reaction pairs
  - occur in pairs
  - work in pairs, on different bodies, in opposite directions, and at the same time
* are a big part of physics
  - consequence of any change in direction of the particles, just as with any fluid flow
  - bound vectors and can be added only if they are applied at the same point
  - divided by charge
  - intensity
  - internal if they are exerted by objects within the system on objects within the system
* are measured by static or dynamic methods
  - in newtons
  - organizations
  - physical phenomenons
  - required for motion with constant velocity
  - resolved and added together to determine their magnitudes and the net force
  - social groups
* are the means by which the transfers occur
  - result of the action of physical bodies
* are things that cause changes in motion
  - transmitted by the jackscrew through the teeth to the underlying bony support
  - vectors, they have a magnitude and a direction in space
  - very important to our world because they affect all of our movements
* based physics allow real life collisions and explosion blasts.
* become friction
  - static friction
* can also be specific and applied to only particular particles
  - arise from any expenditure of energy either from human, animal, or machine
  - be either gravitational or coulombic
  - cause moving objects to speed up or slow down
  - change the direction of motion of a moving object
* can change the shape and size of an object
  - of objects as well as change their motion
  - speed of a moving object
  - only be equal and opposite if they act for equal amounts of time
  - push or pull in any direction and more than one force can act on an object at a time
  - take the form of physical violence, coercion or threat of harm
* cause a change in motion
  - damage
  - events
  - maximum friction forces
  - significant damage
  - stretching are called tensile forces because they create a tension in the materials
* causes acceleration
  - an object to move
  - states
* changing of momentum, while work measure of force applied over a distance.
  - in pairs, equal in magnitude but opposite in direction
* consists of magnetic force and electric force.
* correlates with all lengths of muscle.
* decay in pain, by the light.
* divided by area is called stress
  - over which the force is applied is called pressure
* drive future growth
  - transformation
* driving and restraining energy cause a certain balance to occur.
* equal acceleration
  - mass x acceleration
* equaling three times the body weight can impact the ankle while running or jumping.
* equals mass times velocity
  - pressure times area
* exist in pairs of equal magnitude but opposite direction
* get electricity.
* give energy to objects
  - the object it is acting on
* gives an object the energy to move, stop moving, or change direction.
* happen to objects.
* has both direction and magnitude.
* have adverse impact
  - consequences
  - magnitude and direction and are therefore vector quantities
  - no mass, so they never weigh anything
  - origins
* have same magnitudes
* human invention.
* implies the use of or threat of the use of physical violence to make a person get married.
* influence behavior
* inhibit growth.
* involve exchanges
* involves the use of physical restraint or sedation to enable a treatment to be given.
* is an interaction.
* is anything that causes a change in motion
  - something to move
* is applied in stretching and compressing an object
  - to the base of the spine can result in serious and even permanent back injury
  - between objects, one object pushing or pulling on another
  - causality
  - dependent on mass of the objects
* is directly proportional to mass provided the acceleration is constant
  - the rate of change of momentum with time
  - distributed over many teeth for more strength
* is equal to mass multiplied by acceleration
  - times acceleration
  - the change in momentum per change in time
  - evil, in any guise
  - force, whether initiated by a gangster or a government
  - found by multiplying Mass by gravity, and gravity constant
  - information within each particle, what each is supposed to do
  - mass times acceleration
  - maximum at a height equal to half the base radius
  - measured in newtons
* is measured in units called bars
  - of newtons
  - mentioned only as something that creates acceleration
  - one of the forms of energy
  - physical action taken by one person against another
  - proportional to acceleration
  - proportionate to mass
  - reduced due to the decreasing velocity of air particles
  - related to mass by acceleration
  - sensed in the conscious mind and soul mind
  - that antithesis of humanizing actions
* is that which originates or arrests motion
  - tends to change the state of motion of the clay
* is the antonym and negation of thought
  - capacity to do work or cause physical change
  - cause of motion in classical mechanics
  - energy of concentrated action
  - mechanical effort required to carry out a movement or to prevent movement
  - midwife of every old society pregnant with a new one
  - opposite of freedom
  - pressure created by the controlled explosion taking place inside the rocket's engines
  - tendency to cause acceleration
  - ultimate response for survival in the Darwinian universe
  - used when a situation is already out of control
* major risk factor for soft tissue injury.
* make masses accelerate.
* makes things move or, more accurately, makes things change their motion.
* means power, violence, compulsion, or restraint exerted upon a person.
* measure of the rate of change of impulse.
* meet requirements.
* move air
* occur in pairs and can be either balanced or unbalanced.
* often act at an angle to each other.
* only exist as a result of an interaction.
* oppresses everyone when force is used to suppress anyone.
* overcome friction
  - repulsion
* penetrate shields.
* produce accelerations
* product of mass times acceleration.
* push current
* push or a pull on an object or body
  - pull in a specific direction
* quantitative description of an interaction that causes a change in an object's motion.
* quantity on which many other quantities such as torque, thrust and pressure are based
  - that is measured using the standard metric unit known as the Newton
* related to surface area, such as friction and electrostatics, tend to become large
  - volume, like weight and inertia, tend to decrease in significance
* release of endogenous norepinephrine from pre-synaptic vesicle.
* represent a measure of mechanical interaction of bodies.
* require for circular motion
  - types
* resisting motion through a medium depends on surface and shape of an object.
* result from actions
  - interactions between two objects
* show differences.
* tends to produce linear acceleration, and mass resists linear acceleration.
* threatening type of social action.
* usually decrease with distance.
* varies with gravity.
* vector because it has magnitude and direction
  - quantity and area scalar quantity
* vector quantity, having both magnitude and direction
* vector, so it can be stronger or weaker and it can also point in different directions.
* will have effects.
+ Force, Newton's Second Law, Weight
+ Jerk: Mechanics :: physical quantity
  * Yank can be thought as a force in terms of jerk. Force is mass times acceleration. Similarly, Yank is mass times jerk. It is also the derivative of the force. However, when an object is moving near the speed of light, a force is often written as the derivative of momentum. In this case, Yank is the rate of change of derivative of momentum.
+ Lorentz force: Electromagnetism
  * Lorentz's law' is a law discovered by the Dutch physicist Hendrik Antoon Lorentz. Lorentz's law defines force that acts on moving charged particles in an electromagnetic field. Force consists of magnetic force and electric force.