Card Set Information
basic units from which all other units are made
units that are a combination of two or more of the fundamental units
1 hr = 3,600 s
1km = 1,000 m
to change an object's motion you need __ __.
the change an object's motion you need
constant or no motion means __ __.
constant or no movement means
three ways to describe motion
"zero" location in a frame of reference
frame of reference
a number line used to describe motion
separation between the object and reference point
quantity that only has size/magnitude
# and unit
distance is scalar
quantity that has size, magnitude and direction
#, unit and direction
acceleration, position, displacement, velocity
position at a certain time
measures the separation between two objects
needs no reference point
change in position of an object (start point to end point)
average velocity (v wit line)
the displacement of an object divided by the time interval over which it moved.
If the average velocity is the same throughout the time interval then we have __ __.
If the average velocity is the same throughout the time interval then we have
Speed vs. Velocity
divided by time; scalar quantity
divided by time; vecotr quantity
the rate of change of velocity; change of velocity divided by time.
the slope of a velocity-time graph represents
the area under a velocity-time graph represents
displacement (vector quantity).
the slope of a position-time graph represents
motion that occurs in straight line
equation for constant acceleration
equation for when acceleration is constant
and we do not have final velocity
equation used when acceleration is constant and you
do not have time
summary of three equations
final velocity :