A dragonfly is clocked at 2.0 ms north at one moment and, Ask an Expert

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A dragonfly is clocked at 2.0 m/s, North at one moment, and then 2.0 seconds later, the dragonfly appears to be going approximately 3.5 m/s, West. In that 2-second interval, what is the average acceleration of the dragonfly? (remember, the answer is a vector)

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