velocity and acceleration Flashcards
Distance
length from one point to another
displacement
distance and direction from one point to another
•measured in meters (m)
scalar
a measurement which contains magnitude only
measures distance
vector
a measurement which contains magnitude and direction
displacement is a vector
velocity
speed and direction of an object
•meters/ second (m/s)
v=d/t
velocity (graph)
on a graph…
x-axis: time
y-axis: distance
slope: velocity
http://images.tutorvista.com/cms/images/95/Uniform-Velocity-Graph-example-twos.JPG
slope •positive constant velocity •positive constant forward at the same speed
\
Slope •negative constant velocity •negative constant backward at the same speed
_____k
slope •slope-0 constant displacement velocity •velocity-0 not moving
U
slope •positive increasing velocity •positive increasing forward going faster
C
slope •positive decreasing velocity •positive decreasing forward going slower
acceleration.
change in velocity per unit time
•meter/second^2 (m/s^2 r m/s/s)
velocity equation.
a= ViVf/t
a=
deceleration
negative acceleration= decrease in velocity
a curved path is also an acceleration because direction changes
acceleration (graph)
x-axis: time
y-axis: velocity
slope: acceleration
/
slope •positive constant acceleration •positive constant velocity is increasing at a constant rate, object speeding up
\2
slope •negative, constant acceleration •negative, constant velocity is decreasing at a constant rate, object is slowing down
_______
slope •slope-0 constant velocity acceleration •acceleration-0 moving at the same velocity
D
slope •positive increasing acceleration •positive increasing velocity is increasing at an increasing rate object it speeding up
C2
slope •positive decreasing acceleration •positive decreasing velocity is increasing but not speeding up as fast
MLK system
a division of the metric system
meters
kilograms
seconds
(fundamental units)
There is also is a CGS system
Centimeters
Grams
Seconds
