Moving Right and Moving Left Pre-Activity
Motion
Detector
0 position
d  vsound t
The program then divides this distance in half to find where the car is in relation to the
motion detector
Moving Right and Moving Left Pre-Activity
Motion
Detector
0 position
Therefore, the motion detector does not measure the distance the car has moved, rather
it measures where the car is at any instant of time. This is the position of the car.
Position (x, y, z) – where an object is located at a particular instant of time.
Data Studio
Moving Right and Moving Left Pre-Activity
Motion
Detector
0 position
• The Motion Detector thinks of itself as 0 position.
• To get the smoothest graph, the dial needs to be turned just back from vertical.
• There is a 15 cm “dead zone” in front of the motion detector.