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Acceleration is defined as the rate of change of which quantity?

AThe velocity
BThe displacement
CThe distance
DThe elapsed time
Answer & Solution
Correct answer: A. The velocity
1. The summary states plainly what acceleration measures. 2. Acceleration tracks how fast velocity itself is changing, not how fast position is changing. 3. Because velocity is in m/s and acceleration divides that by more seconds, its unit is m/s squared. _Source: OpenStax Physics (CC BY 4.0), Ch 3 "Acceleration", section 3.1 Acceleration_
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