Answer:
Step-by-step explanation:
From the given information if we assume that the runner didn't come back to her original position.
Her initial velocity = 0 m/s
Final Velocity = 9.6 m/s
Time Taken = 2 seconds
She started from rest therefore her initial time would be 0 seconds.
We know that,
Average acceleration = (final velocity - initial velocity)/(final time - initial time)
=(v-u)/t1-t0
=(9.6 - 0)/(2-0) m/s^2
=4.8 m/s^2