a quantity with a magnitude only
Scalar
a size or amount with units
Magnitude
a quantity with magnitude and direction
Vector
a method for finding a resultant vector in which the tail of one vector is drawn from the tip of another vector
Tip to tail method
the starting point of a vector
Tail
the arrowhead of a vector
Tip
the sum of two or more vectors
Resultant vector
the two vectors that are perpendicular to each other and equal the original vector when added together
Components
the location of an object in a given frame of reference
Position
a scalar measurement of the length of a path connecting two points
Distance
a vector quantity that measures how far and in what direction one position is from another position
Displacement
a scalar quantity that describes the rate at which something is moving
Speed
the speed of an object at one exact moment
Instantaneous speed
the total distance traveled divided by the time it takes to travel that distance
Average speed
a vector quantity that describes the rate of change of position
Velocity
the displacement divided by the time interval needed to travel the displacement
Average velocity
the speed and direction an object is moving at one exact moment
Instantaneous velocity
a vector quantity that describes the rate of change of velocity
Acceleration
a description of the motion of an object near the surface of the Earth while under the influence of only gravity
Free-fall
the magnitude of the acceleration of an object in free-fall
Acceleration due to gravity
