Physics Definitions
physics - correct answer ✔branch of science concerned with matter and
energy and the interaction between them
motion - correct answer ✔change in an object's position with respect to time
particle model - correct answer ✔treats object as particle represented by a
mass at a single point in space with no size or shape
scalar - correct answer ✔quantity fully defined or described by single number
vector - correct answer ✔quantity described by magnitude and direction
displacement - correct answer ✔change in position
velocity - correct answer ✔rate of change of position vector
acceleration - correct answer ✔change of velocity with respect to time; rate
of change of velocity vector
motion diagram - correct answer ✔composite photo showing position of
object for several moments in time
kinematics - correct answer ✔the mathematical description of motion without
regard to cause
, uniform motion - correct answer ✔straight line motion with equal
displacement over successive equal-time intervals
non-uniform motion - correct answer ✔motion in which velocity is not
constant
instantaneous velocity - correct answer ✔speed and direction of object at
one instant in time
derivative - correct answer ✔measure of how a function changes as its input
changes
integral - correct answer ✔summation over infinitesimally small portions of
the function
uniformly accelerated motion - correct answer ✔motion occurring if and only
if an object's acceleration is constant
2-D kinematics - correct answer ✔motion in two directions
projectile motion - correct answer ✔motion in which acceleration is only due
to gravity
trajectory - correct answer ✔path followed by a projectile object
dynamics - correct answer ✔study of the cause of motion
force - correct answer ✔any influence that causes an object to undergo a
change in velocity
physics - correct answer ✔branch of science concerned with matter and
energy and the interaction between them
motion - correct answer ✔change in an object's position with respect to time
particle model - correct answer ✔treats object as particle represented by a
mass at a single point in space with no size or shape
scalar - correct answer ✔quantity fully defined or described by single number
vector - correct answer ✔quantity described by magnitude and direction
displacement - correct answer ✔change in position
velocity - correct answer ✔rate of change of position vector
acceleration - correct answer ✔change of velocity with respect to time; rate
of change of velocity vector
motion diagram - correct answer ✔composite photo showing position of
object for several moments in time
kinematics - correct answer ✔the mathematical description of motion without
regard to cause
, uniform motion - correct answer ✔straight line motion with equal
displacement over successive equal-time intervals
non-uniform motion - correct answer ✔motion in which velocity is not
constant
instantaneous velocity - correct answer ✔speed and direction of object at
one instant in time
derivative - correct answer ✔measure of how a function changes as its input
changes
integral - correct answer ✔summation over infinitesimally small portions of
the function
uniformly accelerated motion - correct answer ✔motion occurring if and only
if an object's acceleration is constant
2-D kinematics - correct answer ✔motion in two directions
projectile motion - correct answer ✔motion in which acceleration is only due
to gravity
trajectory - correct answer ✔path followed by a projectile object
dynamics - correct answer ✔study of the cause of motion
force - correct answer ✔any influence that causes an object to undergo a
change in velocity
