acceleration quiz may 6
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define motion
a change in position
what does frame of reference mean?
something that is not moving with respect of an observer that can be used to detect motion
give an example of frame of reference
when you look outside of a moving car window and see trees moving. this makes you think you are moving
define distance
the length of the route between 2 points
what is the SI unit of distance
meters (m)
define vector
a measurement that includes both size and direction
define direction
the location of something relative to something else
fill in the blank: length of the arrow refers to ___________.
distance
fill in the blank: where the arrow refers to is ____________.
direction
define speed
how fast or slow something moves
define velocity
tells us speed and direction of moving object
define instaneous speed
speed at a given instant
define average speed
how far you go/the timer you go for
define acceleration
tells us rate, speed, or direction changes
a distance-time graph compares the _____________ that someone travels, compared to the _____.
• distance • time
time is the ________________ variable
independent
distance is the ____________ variable
dependent
define slope
slops of the line indicates the speed. the greater the slope, the greater the speed. the smaller the slope, the lower speed
define position
location of object
how does an object change position?
if relative to a reference point
change in position is determined by…
the distance and direction of change from the starting point
define direction
path which something is moving
give an example of direction
up, down, west, east, south, north
steep line =
fast