Section 1 - what is motion?
At the beginning of a track race, the instantaneous speed of all runners is __________
0m/s because they haven't started
ex: the sprinters motion from the entire race
average speed
found by divided the total distance traveled by the time taken
average speed
the objects speed does not change
constant speed
how to calculate speed
d -- t
ex: 40m NW
displacement
includes the distance between your starting and ending points and the direction in which ou travel
displacement
ex: 40m
distance
the length of the route tou will travel
distance
x-axis stands for
horizontal
where is time plotted on a distance time graph
horizontal line
how do you know if something is in motion>
if it is changing position
how does velocity change
if the objects speed changes, its direction of motion changes, or they both change
speed of an object at one instant of time
instantaneous speed
what unit is used for speed?
m/s
all matter in the universe is constantely in------
motion
how do you determine if something is in motion
point of reference
Movement occurs when an object moves relative to a_____
reference of point
the distance travekled divided by the time takes to travel the distance
speed
what does a horizontal line mean on distance time graph?
that no change in position occurs
When a car goes around a curve at 20 mph, the __________ changes.
velocity
the speed of the oject and direction of its motion
velocity
where is distance plotted on a distance time graph?
vertical
y-axis stands for
vertical
when you are sleeping, are you still in motion?
yes, because ervything inside of you is moving, like your blood is circulating
