phyphox can determine the fall height of a ball from the noise it makes while bouncing.
The videos about the acoustic stopwatch can be found here:
Speed of sound: https://youtu.be/uoUm34CnHdE
Free fall: https://youtu.be/zRGh9_a1J7s
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You can also watch a German version of this video:
https://youtu.be/sqCEo4tj3e4
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