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An Australian emu is running due north in a straight line at a speed of 13.0 m/s and slows down to a speed of 9.60 m/s in 3.90 s. (a)
What is the magnitude and direction of the bird's acceleration? (b) Assuming that the acceleration remains the same, what is the bird's
velocity after an additional 1.20 s has elapsed?
(a) Number i 0.87
(b) Number 8.56
Units m/s^2
Units
m/s
+

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