Understanding the Concepts

* Average Velocity: Average velocity is the total displacement divided by the total time.

* Displacement: Displacement is the overall change in position. Since the ball starts and ends at the same point, its displacement is zero.

Solution

1. Displacement: The ball's displacement is 0 meters.

2. Time: The total time is 1.7 seconds.

3. Average Velocity:

* Average velocity = Displacement / Time

* Average velocity = 0 meters / 1.7 seconds

* Average velocity = 0 m/s

Answer: The average velocity of the ball is 0 m/s.

Important Note: Even though the ball travels a distance of 3.5 meters up and 3.5 meters down, the *average velocity* considers only the overall change in position, which is zero in this case.