Answer:
The average velocities are:
for 0.01.s
for 0.005 s
for 0.002 s
for 0.001 s
Step-by-step explanation:
The average velocity is given by

So, we just need to find the position at t = 3 s and then, after every period of time.
Position at t = 3 s
Knowing that

at t = 3 s we have



After 0.01 s
After 0.01 s the position will be


So, the average velocity will be



The minus sign is there cause the velocity is pointing downward.
After 0.005 s
After 0.005 s the position will be


So, the average velocity will be



After 0.002 s
After 0.002 s the position will be


So, the average velocity will be



After 0.001 s
After 0.001 s the position will be


So, the average velocity will be


