The average velocity is determined by the time it takes for the
ball to go a given distance. Compute the average velocity for each
of the two meter distance units that you have previously defined.
As in the previous exercises involving the real ball dropping
make plots of average velocity vs height above the surface and
total distance travelled versus time.
Now we will simulate what we did in the Atrium but this time
acquire a lot more data with better precision. This part only will
work on the Moon so make sure moon is selected.
Using the procedure outlined above with the red and green makers
set them a part at units of 1/4 of a meter. Starting from 0.
So your first measurement of time is from 0.0 to 0.25, your
second one is from 0.25 to 0.50, etc continuing until the last
measurement is from 5.75 to 6.00. Make a plot of total distance
travelled versus time. From that plot determine how long it
will take for the ball to reach a distance of 24 meters.
Here finally is a test to see if you now empirically know the
relation between distance travelled and time for objects in
Free Fall:
 Experimentally determine the distance which an object on the Moon will
fall in one second. Now predict at what distance the object will be
in two seconds. Test your prediction.
 The total freefall time is 2.72 seconds. At what distance will the
object have travelled in 1/2 this time? Again, check your answer.
 From these experiments you should now be able to write down
an equation that relates distance travelled to elapsed time. What
is this equation? (no fair looking it up in a book).
