Experiments with the Distance SensorMeter
A sticky collision on an air-track
Distance SensorMeter transducer 40 cm from air-track. No large objects in field of view and ready to go.
And here goes (if your browser shows videos) !
Datadisc Pro can fit functions to the separate segments of the graph. We used the quadratic fit to show that, even with an air-track, there is a deceleration involved before and after the impact. The velocity components are in the expected ratio as well.
Channel 1: Distance / m, SensorMeter
Channel 2: Distance / m, Quadratic fit of channel 1 against channel 8.
y = 0.729 + 0.611x - 0.0240x².
Channel 3: Distance / m, Quadratic fit of channel 1 against channel 8.
y = 1.19 + 0.217x - 0.0103x².
g by free fall
A hockey ball on a cord with some elasticity is ideal for this.
And go!
A quadratic fit again for the bounce.
Channel 2: Distance / m, Quadratic fit of channel 1 against channel 8.
y = -1.11 6.79x -4.85x².
(g = 4.85 x 2 = 9.9 N/kg)