# Shared Flashcard Set

## Details

Forces and Motion
CSET
26
Physics
01/29/2016

Term
 Four Basic Motions
Definition
 gravity, nuclear weak force, electromagnetic force, nuclear strong force
Term
 Theory of Relativity
Definition
 1916, Accepted explanation of gravity as property of space and time,  Einstein
Term
 Special Theory of Relativity
Definition
 1905, law of physics are the same for all observers in uniform motion relative to one another, Principle of Relativity Speed of light in a vaccuum is the same for all observers relative motion
Term
 Electric Force
Definition
 Strength is proportional to the square of the distance between two objects
Term
 Momentum
Definition
 P=MV Momentum = mass times velocity
Term
 Conservation of Momentum
Definition
 Total momentum in a closed system is constant
Term
 Centripetal Force
Definition
 Force that pulls an object towards center (Mass*Velocity^2)/radius
Term
 Centrifrugal Force
Definition
 Opposite of centripetal force
Term
 Weight
Definition
 Weight=mass*gravity
Term
 Terminal Velocity
Definition
 When an object ceases to accelerate downward due to wind resistance but moving at constant speed
Term
 Fluid Pressure
Definition
 Force of pressure is dependent upon the depth and density of the fluid and the acceleration of gravity P=pgh P=Static fluid pressure,p=fluid density, (mass / volume), g is acceleration of gravity, h is depth of fluid
Term
 Torque
Definition
 Torque = force * lever arm Level arm is perpendicular distance from axis of rotatioin
Term
 Newton's First Law
Definition
 Law of Inertia, body in motion stays in motion unless another force acts upon it
Term
 Newton's Second Law
Definition
 F=MA
Term
 Newton's Third Law
Definition
 For every force there is an equal and opposite force
Term
 Work
Definition
 Force x Distance
Term
 Simple Machines
Definition
 Plane, level, wheel, axle, and pulley
Term
 Static Friction
Definition
 occurs when there is no relative motionm between surfaces
Term
 Archimede's Princple
Definition
 A buoyant force on an submerged object is equal to the weight of the liquid displaced Mass - Mass When Submerged = Density of Water * Volume of Object
Term
 Bernoulli's Principle
Definition
 When the velocity of a gas or liquid is increased, pressure is decreased
Term
 Coulomb
Definition
 Electric Charge is measured with this unit
Term
 Plastic Rod & Fur Vs Glass Rod & Silk
Definition
 Plastic Rod becomes negative, Glass Rod becomes positive
Term
 Anions
Definition
 Negatively Charged Atoms
Term
 Cation
Definition
 Positively charged atoms
Term
 Kinectic Energy
Definition
 Energy of an object in motion KE = 1/2mv^2
Term
 Potential Energy
Definition
 Energy capacity for doing where based on position PE=mgh
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