Studied by 9 peoplereference point
starting point you choose to describe the location, or position, of an object
position
an object's distance and direction from a reference point
motion
the process of changing position
displacement
the difference between the initial (first) position and the final position of an object (vector quantity)
distance
how much ground an object has covered during its motion (scalar quantity)
scalar
quantities that are described by a magnitude (or numerical value) alone
vector
quantities that are described by both a magnitude and a direction
speed
a measure of the distance an object travels per unit of time (scalar quantity)
constant speed
the rate of change of position in which the same distance is traveled each second
instantaneous speed
speed at a specific instant in time
average speed
the total distance traveled divided by the total time taken to travel that distance
average speed formula
velocity
the speed and the direction of a moving object (vector quantity)
units for speed & velocity
meters per second (m/s)
acceleration
a measure of the change in velocity during a period of time (vector quantity)
average acceleration formula
units for acceleration
meters per second per second (m/s/s or m/s^2)
p-t graph - object at rest
p-t graph - constant, positive velocity
p-t graph - constant, negative velocity
p-t graph - accelerating in the positive direction
p-t graph - accelerating in the negative direction
p-t graph - decelerating in the positive direction
p-t graph - decelerating in the negative direction
p-t graph - constant positive velocity, then higher constant positive velocity
p-t graph - higher constant positive velocity, then lower constant positive velocity
v-t graph - constant positive velocity; no acceleration
v-t graph - object at rest
v-t graph - constant negative velocity, no acceleration
v-t graph - positive acceleration
Note
Flashcard