Calculate Bird's Average Acceleration

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To calculate the bird's average acceleration, the initial velocity (Va) is 4.4 m/s at 31 degrees South of East, and the final velocity (Vb) is 7.8 m/s at 25 degrees North of East. A vector diagram is recommended to visualize the change in velocity. The change in velocity can be determined by subtracting Va from Vb. Using the change in velocity and the time of 8.5 seconds, the average acceleration can be calculated. This method effectively applies kinematic principles to solve the problem.
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A bird takes 8.5s to fly from position A to Position B along a path (looks like a parabolic curve facing downward) determine the birds average acceleration

Va = 4.4 m/s [31 S of E]
Vb = 7.8 m/s [25 N of E]
 
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I would draw a vector diagram to find the acceleration.

va + change in v = vb

The change in v plus the time given allows you to calculate the aceleration
 

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