(adsbygoogle = window.adsbygoogle || []).push({}); QUESTION=

a bird takes 8.5 s to fly from position A to position B along the path. determine the bird's average acceleration.

va= 4.4 m/s (3 degrees S of E) -- is this the initial velocity?

vb= 7.8 m/s ( 25 degrees N of E) -- is this the final velocity?

THIS IS WHAT I GOT SO FAR, I"M NOT SURE IF IT IS RIGHT AT ALL -->

ay = vfy - vfi / time

i found , ax = 0.52

ay = 0.92

a(2) = ax(2) + ay(2)

= (0.52)2 + (0.92)2

= 0.29 + 0.85

= √1.14 m/s(2)

therefore, average acceleration = 1.07 m/s

tan = 0.92 \ 0.52

tan = 60.4 degrees

Therefore the average acceleration of the car is 1.07 m/s (60.4 degreesN of E)

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Help needed with average acceleration question

**Physics Forums | Science Articles, Homework Help, Discussion**