Gravity: Using a Motion sensor to measure g by free fall

 Position the Motion sensor at the top of the vertical pillar and connect to an EasySense data logger. The range of the Motion sensor should be set to Distance. The ball needs to bounce onto a hard surface.  Open the EasySense program and select Graph. From the wizard select the following:

Time

5 seconds 20 ms Distance rises above 0.30 m

 Select Start. Hold the ball about 10 cm below the Motion sensor. Release the ball (move the hands away quickly).

Interval Trigger