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Determine the initial height and loss of energy of a bouncing ball.
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Explore the relation of angular velocity and centrifugal acceleration using the gyroscope and the accelerometer. (For example when putting your phone into a salad spinner)
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Measure the speed and travelled height from within an elevator using the pressure sensor.
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Using the acoustic stopwatch you can determine the duration of a free fall. (Note, that there is an alternative version using magnetic detection.)
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Set up a bunch of magnets as marker, so you can use this experiment to measure the speed and distance while moving along these magnets.
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Measure the frequency of a pendulum on a string. You can determine the gravity constant this way.
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Put your phone into a paper roll and use the gyroscope to determine its speed.
This experiment is no longer available on iOS! (details)
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Turns your phone into a sonar to either measure distances or determine the speed of sound.
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Using the acoustic stopwatch you can determine the speed of sound with two phones and a tape measure.
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Measure the frequency of a pendulum on a spring.
