1.) After my group set up the computer, the motion sensor, and the Data Studio software, I held a cardboard box lid up, close to my body, at the height of the motion sensor, so it would have a definite surface to measure from. I walked back and forth in front of the sensor for approximately 11 seconds (a group member timed me). I actually had to walk back and forth several times, in order to produce a smooth “position” graph. Data Studio allowed me to compare the position and velocity graphs, showing the relationship between acceleration and velocity. 3.) From my position graph, I can see that my total distance traveled was approximately 5.05 meters, and my displacement was around 0.915 meters, from t=1 to t=11. Average speed = = 0.505 meters/sec Average velocity = = .0915 meters/sec away from the sensor. 4.) The displacement in Step 9 was nearly the same as the area in Step 10. There was only a tiny discrepancy. Percent error: *100 =0.057% error One reason why the numbers might be different is that the selection from the closest and farthest points from the sensor may not be completely accurate to each other, because they were estimated. If this wasn’t exactly accurate, the displacement and the area may have been off. In addition, the velocities seem to be measured in averages, and not continuously. This causes some parts of the graph to have steep spikes or drops, without the graph looking smooth. The little disconnectedness of the graph due to non-continuous measurements of velocity might lead to an inaccurate reading of the area.
1.) After my group set up the computer, the motion sensor, and
the Data Studio software, I held a cardboard box lid up, close to
my body, at the height of the motion sensor, so it would have a
definite surface to measure from. I walked back and forth in front
of the sensor for approximately 11 seconds (a group member timed
me). I actually had to walk back and forth several times, in order
to produce a smooth position graph. Data Studio allowed me to
compare the position and velocity graphs, showing the relationship
between acceleration and velocity. 3.) From my position graph, I
can see that my total distance traveled was approximately 5.05
meters, and my displacement was around 0.915 meters, from t=1 to
t=11. Average speed = = 0.505 meters/secAverage velocity = = .0915
meters/sec away from the sensor.
4.) The displacement in Step 9 was nearly the same as the area
in Step 10. There was only a tiny discrepancy. Percent error: *100
=0.057% errorOne reason why the numbers might be different is that
the selection from the closest and farthest points from the sensor
may not be completely accurate to each other, because they were
estimated. If this wasnt exactly accurate, the displacement and the
area may have been off. In addition, the velocities seem to be
measured in averages, and not continuously. This causes some parts
of the graph to have steep spikes or drops, without the graph
looking smooth. The little disconnectedness of the graph due to
non-continuous measurements of velocity might lead to an inaccurate
reading of the area. 5.) The position graph slopes were generally
equal to the velocity graph values. This was true at the zero
crossings, and the minimum value on the velocity graph. However,
there was a discrepancy at the maximum value on the velocity graph.
This was probably due to the fact that the velocity graph spikes at
that point, and so the reading is inherently inaccurate.
