# Shared Flashcard Set

## Details

Chapter 5 vocab
Chapter 5
20
Physics
Not Applicable
10/20/2006

Term
 Work
Definition
 process of energy transferred in or out of the system, equals the amount of energy transferred, determined by product of force in direction of motion
Term
 Power
Definition
 rate at which work is done or can be done, scalar
Term
 Energy
Definition
 measures ability to do work
Term
 Kinetic energy
Definition
 energy of a moving object or ability to do work
Term
 Gravitational Potential Energy
Definition
 energy that an object has in a gravitational field
Term
 Elastic potential energy
Definition
 energy in a stretched or compressed spring
Term
 Work-energy theorem
Definition
 the net work on a system changes its kinetic energy
Term
 Conservation force
Definition
 force for which works depends on starting and ending points of motion
Term
 Nonconservative force
Definition
 force for which work depends on the path
Term
 Closed (conservative) system
Definition
 system of objects that experience conservation force only
Term
 Open(nonconservate) system
Definition
 system subjected to nonconservative forces
Term
 Mechanical energy
Definition
 sum of kinetic and potential energy
Term
 Conservation of mechanical energy
Definition
 in a closed system total amount of mechanical energy before and after physical process remains the same
Term
 Linear momentum
Definition
 vector physical quantity equal to product of mass times velocity,
Term
 Impulse
Definition
 vector, equal a product of a force with a time interval
Term
 Isolated system
Definition
 group of objects which the net external force (external action) is equal to zero
Term
 Elastic collision
Definition
 collision in the system of 2 or more bodies during which there is conservation of momentum and kinetic energy
Term
 Inelastic collision
Definition
 collision in the system of 2 or more bodies during which there is conservation of momentum but no conservation of kinetic energy
Term
 Jet (rocket) propulsion
Definition
 force produced by an ejected gas on a jet engine’s (a rocket’s) body
Term
 Conservation of linear momentum
Definition
 in isolated system total amount of linear momentum remains the same
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