Answer: Her average acceleration is
.
Step-by-step explanation:
Given: Initial velocity = 0 m/s
Final velocity = 3 m/s
Time = 6 seconds
Formula used to calculate the acceleration is as follows.
v = u + at
where,
v = final velocity
u = initial velocity
a = acceleration
t = time
Substitute the values into above formula as follows.

Thus, we can conclude that her average acceleration is
.