A bus traveling at 6 m/s accelerates for 15 seconds until it travels at 36 m/s. What was the Bus's acceleration.
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Acceleration = (change in speed) / (time for the change) <== Memorize this
Change in speed = (speed at the end) minus (speed at the beginning)
Change in speed = (36 m/s) minus (6 m/s) = 30 m/s
Acceleration = (30 m/s) / (15 s)
Acceleration = 2 m/s²