some time ago I posted a question re acceleration data. I bought an accelerometer and logged some data. when stationary the accelerometer (can mention the brand if that is not spamming) read 1g, when thrown in the air got what was expected with 0g ie weightless when the accelerometer switched from upward motion to downward motion due to gravity as expected. the problem is this when the accelerometer was stationary ie velocity = 0 you can integrate the acceleration curve as a function of time and you clearly get a non zero value because acc = 1g for this time. the integral gives the acceleration in theory but the data suggests the device had a non zero motion. how do I rationalise this??