lesson 4- velocity & acceleration Flashcards
(26 cards)
speed vs velocity
how fast something goes is speed, and velocity is the speed and direction of an object.
scalar quantity: is it speed or velocity
speed
vector quantity: is it speed or velocity
velocity
is speed or velocity related to distance?
speed is
is velocity or speed related to displacement?
velocity is
time
point in time related to reference or zero time
time interval
difference between two times
time interval formula
t= t2 - t1
velocity formula
v= change d/ change t (arrow on top)
straight line going across
resting point of velocity
straight line going upwards
positive velocity
straight line going downwards
negative velocity
uniform motion
no change in velocity
acceleration
change of velocity of an object during time interval
is acceleration a uniform motion?
NO
is acceleration a vector quantity or scalar quantity?
vector quantity
when an object is speeding up, the magnitude and velocity are …..
increasing
what happens when an object slows down?
magnitude and velocity decrease
positive acceleration
both magnitude of velocity and change in direction are positive
negative acceleration
both magnitude of velocity and change in direction are negative
magnitude of velocity is negative then
change in direction is postive
magnitude of velocity is positive
change in direction is negative
if the slope of the line is gradually decreasing, the velocity or acceleration of the object is…
also decreasing
if the slope of the line is gradually increasing thenthe velocity or acceleration of the object is…
also increasing
