|Once you have the reference point you can then establish that
something has moved. The distance it compared to the reference
point is the amount of motion.
Distance is measured in meters
|Now that we know how far something has moved compared to a reference point we next need to
know how long it took (time) to move. From this we can get speed. (speed = distance / time)
|To find the average speed of
an object we just take the
total distance it covered and
divide by the total time it
The car at the left stops at
some lights and a stop sign,
so sometimes it is standing
still, but its average speed is
25 miles / hour.