In which of the following are action and reaction forces involved?
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Newtons 3rd Law,\nFor every action, there is an equal and opposite reaction.\n\nSo all of the instances given, there is both an action and reaction force occuring.
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force is the total amount of force exerted... pressure is the amount of force exerted over a specific area. the formula is P=F/A the units are expressed in Newtens per meters squared N/m^2
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The net external force acting on a particle is equal to the product of the mass and its acceleration.\n\nF = ma\nwhere, F = the net external force\n       m = the mass of the particle\n       a = the acceleration of the particle
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Hi there,\n\nkinetics is a vast subject. Maybe you should try to add some details to your question. There's chemical kinetics, human kinetics, etc. Anyway, try this lead first http://en.wikipedia.org/wiki/Kinetics
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Mass.\n\nF=ma\n\nF is the force\nm is the mass\na is acceleration
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Newton's Laws of Motion:\n\nI. Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it.  \n\nII. The relationship between an object's mass m, its acceleration a, and the applied force F is F = ma. Acceleration and force are vectors (as indicated by their symbols being displayed in slant bold font); in this law the direction of the force vector is the same as the direction of the acceleration vector.  \n\nIII. For every action there is an equal and opposite reaction.
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Remember the net work is the change in Kinetic energy.  In order for a force to do work, it must be parallel the motion.\n\nW = f (dot) d   =  f*d*cos(theta)\n\n Also, Mechanical (and Total) energy is conserved. Thus, any increase in kinetic energy is coupled with an equal decrease in potential energy. \n\n/&#92;K = -/&#92;U = Wnet
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Energy\n\nA chemical reaction simply supplies energy to the system
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Basically you have the right idea. Use momentum (mass x velocity) for the motion and the sudden change in speed and/or direction (acceleration) and you get force x time = kinetic energy trying to rip you apart or squash you like a bug.
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The particles must collide with sufficient energy (i.e. be moving with sufficient velocity) and they must collide with the proper orientation to form a new bond. They must overcome the activation energy plateau in order to react.
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Yeah, force is just energy applied on a particle. Force per time is power.
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Newton's Law of motion\n----------------------\n\n"FOR EVERY ACTION THERE IS AN EQUAL AND OPPOSITE REACTION"\n\nThis law is applicable in each and every day action like walking, firing bullets to lanching rockets.\n\nThe force we given to the floor while walking resulted in a opposite force from the floor which moves us forward.
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In physics, a force is anything that causes a body with mass to accelerate. The net (or resultant) force is the sum of all the different forces acting on a body.\n\nForce is a vector quantity defined as the rate of change of momentum induced by the force, and therefore has a direction associated. The SI unit for force is the newton.
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force=mass*acceleration\nforce/area=pressure (usually measured in p.s.i. [pounds per square inch])
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The normal reaction is different from frictional force.\n\nEven after applying a force, if a body is at rest, we say that there is friction.\n\nWhen no force is applied to cause relative motion, then there is no friction at all.\n\nYou are correct in saying that no force (causing motion) means no friction.\n\nSimilarly if a body is moving with constant speed and no force is needed to maintain that speed in that case also no friction.
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N is Newtons, a unit that measures force. For every 1kg of something, if it accelerates at 1 meter per second per second (m/s/s or meters per seconds squared), than there is a force of 1N acting on it.\n\nForce is calculated by multiplying the mass (not weight) with the acceleration. For example, if you are 75kg, than there is a force of 75kg X 9.8 m/s/s (acceleration due to gravity: roughly constant on Earth) = 735N pulling you down. BUT, there is a reaction force, in this case the NORMAL, pushing you back up at the same time and force. Therefore, the force pulling you down, 735N, take away the NORMAL, also 735N, and you will have a NET FORCE of 0N because you are stationary. \n\nSo in order to resist something pulling at 14N (ignoring air resistance, friction, etc), it needs to pull back 14N.
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Forces Acting on An Airplane\nThere are four forces acting on the airplane all the time during airplane is flying.The four forces are\n(1) Lift, (2) Gravity force or Weight, (3) Thrust, and (4) Drag.\nLift and Drag are considered aerodynamics forces because they exist due to the movement of the Airplane through the Air.\nWeight: The weight acts vertically downward from the center of gravity (CG) of the airplane.\nThrust: is defined as the forward direction pushing or pulling force developed by aircraft engine . This includes reciprocating engines , turbojet engines, turboprop engines.