Acceleration (a) is the change in velocity (∆v) over the change in time (∆t)

• ∆v = 25 m/s - 12 m/s
• ∆v = 13 m/s

∆t = 6s

So, the acceleration of the truck is:

• a = ∆v/∆t
• a = 13/6
• a = 2.167 m/s²

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