Unit 1 Flashcards
acceleration
the rate at which the velocity changes with respect to a change in time
acceleration due to gravity
g: 32 ft/s2 or 9.80 m/s2 on the earth’s surface
average speed
the total distance traveled divided by the total time traveled
average velocity
the total displacement divided by the total time
component
the vertical and horizontal vectors which add together geometrically to become the resultant
derived units
units calculated by multiplication or division from measurements in base units
demensional analysis
a mathematical problem-solving method that utilizes conversion factors
displacement
the shortest distance between an initial and final position and the direction along that line; a vector quantity
distance
the change in position from one location to another.
field
a region in space that yields a value for a measurable quantity at every point
kinematics
a branch of mechanics dealing with the mathematical methods of describing motion without regard to what causes that motion
mass
the quantity of matter that a body possesses
model
a mental construct that describes a physical phenomenon
motion
a continuous change of position
precision
the degree of exactness of a measurement, described by the number of significant digits used to express the value
