# Shared Flashcard Set

## Details

physics vocab
for Test #1 of the year
13
Physics
09/30/2008

Term
 Base SI units
Definition
 the fundamental units of the metric system (meters, kilograms, seconds)
Term
 derived unit
Definition
 any unit that is not fundamental and is a combination of kilograms, meters and/or seconds (m/s)
Term
 scalar quantity
Definition
 a quantity, such as mass, that can be specified entirely by size or magnitude.
Term
 vector quantity
Definition
 a quantity, such as displacement, which is specified by its magnitude (size) and its direction
Term
 acceleration
Definition
 the rate of change in velocity
Term
 Acceleration due to gravity
Definition
 the acceleration of a freely falling object in the absence of air resistance, which near the earth’s surface is approximately 9.81 m/s2
Term
 acceleration-time graph
Definition
 plot of the acceleration of an object as a function of time
Term
 average acceleration
Definition
 the acceleration of an object measured over a time interval
Term
 Average velocity
Definition
 the velocity of an object measured over a time interval; the displacement over time
Term
 Constant acceleration
Definition
 acceleration which does not change during a time interval
Term
 Instantaneous
Definition
 the value of a quantity at a particular instant of time, such as instantaneous position, velocity, or acceleration
Term
 Kinematics
Definition
 the study of how motion occurs, including distance, displacement, speed, velocity, acceleration, and time
Term
 Velocity
Definition
 ratio of the displacement of an object to a time interval
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