Acceleration = (change in speed) / (time for the change)
Acceleration = (12.15 - 0) / 4.5 = 2.7 meters per second²
Acceleration measures how quickly an object's velocity changes over time, calculated as the change in speed divided by the time taken. In the example provided, if a car speeds up from 0 m/s to 12.15 m/s in 4.5 seconds, its acceleration is 2.7 m/s². This concept is fundamental in understanding motion in physics.
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