Posted by **Mark** on Wednesday, July 16, 2008 at 10:41pm.

A bird, accelerating from rest at a constant rate, experiences a displacement of 28 m in 11 s. What is its acceleration?

A. 0.21

B. 0.46

C. 0.64

D. 0.78

E. 0.97

acceleration= change in velocity/change in time

and the velocity= change in displacement /change in time

Velocity=28 m/ 11 s= 2.5 m/s

Acceleration=2.5/11= 0.23 m/s^2

Which is close to Letter A, so the answer is letter A...is this correct?

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