# Shared Flashcard Set

## Details

Physics
n/a
25
Physics
02/24/2011

Term
 Acceleration
Definition
 the rate at which a velocity changes; often measured in m/s2
Term
 Centripetal Force
Definition
 component of force acting on a body in circular motion that is directed towards the center of axis of rotation
Term
 Equilibrium
Definition
 state in which opposing forces or influences are balanced
Term
 Force
Definition
 an influence, which if applied to a moving body, results in an acceleration of that body
Term
 Friction
Definition
 force from rubbing that resists the continued motion of 2 objects in contact
Term
 Galileo
Definition
 demonstrated that different weights descend at the same rate
Term
 Gravitational Potential Energy
Definition
 energy stored in an object based on its weight and height
Term
 Gravity
Definition
 attraction between any 2 objects, proportional to their masses, divided by the distance between them squared
Term
 Inertia
Definition
 tendency of a body to resist acceleration
Term
 Kinetic Energy
Definition
 the energy of motion KE = 1/2mv2
Term
 Newton's First Law
Definition
 every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it
Term
 Newton's Second Law
Definition
 The relationship between an object's mass (m), its acceleration (a), and the applied force (F) is F=m x a
Term
 Newton's Third Law
Definition
 For every action there is an equal and opposite reaction
Term
 Reflection
Definition
 bouncing back of light, heat, or sound after hitting a surface
Term
 Refraction
Definition
 bending of a light ray or energy passing from 1 medium into another caused by changes in the speed of the wave
Term
 Sound Waves
Definition
 mechanical radiant energy that is transmitted by longitudinal pressure waves in a material medium and is the objective cause of hearing
Term
 Types of energy
Definition
 Chemical Electromagnetic Electrical Heat Kinetic Mechanical Nuclear Potential
Term
 Velocity
Definition
 rate of change of an object's position over time, measured in meters/second
Term
 Weight
Definition
 force with which a body is attracted to Earth or another celestial body, equal to the product of the object's mass and the acceleration of gravity
Term
 Work
Definition
 transfer of energy from 1 physical system to another
Term
 Power
Definition
 rate at which work is done, expressed as the amount of work per unit time, commonly measured in watts or horsepower
Term
 Momentum
Definition
 product of mass x velocity
Term
 Wavelength
Definition
 distance between 1 wave and another
Term
 Amplitude
Definition
 height of a wave
Term
 Frequency
Definition
 number of waves that pass through a specific period in a specific time interval
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