Assertion: uniaxial vertical accelerometer | /r/CapableOf | show a reading of -9.81 m/s²
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Source sentences:
text: While it is true accelerometers do measure acceleration, we didn’t want to confuse matters by saying that what accelerometers measure is actually acceleration relative to freefall—and that’s why a vertical accelerometer at rest shows a reading of -9.81 m/s².