# Shared Flashcard Set

## Details

IPC 2nd Semester Vocab
N/A
35
Science
05/25/2012

Term
 Speed
Definition
 Distance divided by time (D/t)
Term
 Velocity
Definition
 Speed of an object and specification of its direction (D/t)
Term
 Acceleration
Definition
 The rate at which velocity changes with time (TRIANGLEv/t)
Term
 Deceleration
Definition
 Decrease in velocity
Term
 Vector
Definition
 A quantity having both magnitude and direction
Term
 Scalar
Definition
 A quantity with only magnitude
Term
 Kinematics
Definition
 The study of moving objects
Term
 Dynamics
Definition
Term
 Newton's 1st Law
Definition
 The velocity of a body remains constant unless the body is acted upon by an external force (inertia)
Term
 Newton's 2nd Law
Definition
 The acceleration a of a body is directly proportional to the net force F and inversely proportional to the mass m (F=ma)
Term
 Newton's 3rd Law
Definition
 The mutual forces of action and reaction between two bodies are equal and opposite
Term
 Force
Definition
 An influence which can cause an object to be accelerated (F=ma)
Term
 Newton
Definition
 The SI unit of force 1 Newton(N)=force to move 1kg 1m/s2
Term
 Impulse
Definition
 The product of a force acting on a product and the time during which it acts (I=Ft)
Term
 Momentum
Definition
 Mass of an object times the velocity (M=mv)
Term
 Universal Law of Gravitation
Definition
 Every mass in the universe attracts every other mass with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them
Term
 Potential Energy
Definition
 The energy an object has because of its position, i.e. a ball at the top of a hill
Term
 Kinetic Energy
Definition
 The energy an object has because of its movement, i.e. a ball rolling down a hill
Term
 Law of Conservation of Energy
Definition
 The total amount of energy in an isolated system remains constant over time
Term
 Wave
Definition
 A disturbance propagated through a material or empty space
Term
 Reflection
Definition
 The return of waves off an object with which they collide
Term
 Refraction
Definition
 The bending of waves as they pass through different mediums, cause by a difference in wave speed
Term
 Diffraction
Definition
 The bending of a wave as it passes around an object or through a narrow slit
Term
 Transverse Wave
Definition
 A wave in which the medium vibrates in a direction perpendicular to the direction it travels
Term
 Longitudinal Wave
Definition
 A wave which vibrates parallel to the direction it travels
Term
 Crest of a Wave
Definition
 The highest point of a wave
Term
 Trough of a Wave
Definition
 Lowest point of a wave
Term
 Amplitude of a Wave
Definition
 The maximum displacement on either side of the midpoint position of a wave
Term
 Wavelength
Definition
 The distance between successive identical parts of a wave
Term
 Wave Speed
Definition
 The speed with which waves pass a particular point (Speed=Frequency x Wavelength)
Term
 Frequency
Definition
 The number of vibrations per unit time in a wave
Term
 Law of Reflection
Definition
 The angle of reflection of a wave will always equal the angle of incidence
Term
 Sound Waves
Definition
 Waves created by vibrations in the air
Term
 Echo
Definition
 A sound wave reflecting off an object and returning to its original position
Term
 Ultrasonic
Definition
 Sounds higher with a higher frequency than a human is able to hear
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