1. Calculate the total time:

* The object travels for 4 seconds + 2 seconds = 6 seconds

2. Calculate the total distance:

* The object travels 16 meters (we don't have information about the distance traveled in the last 2 seconds, so we assume it remains stationary).

3. Calculate the average speed:

* Average speed = Total distance / Total time

* Average speed = 16 meters / 6 seconds

* Average speed = 2.67 meters per second (approximately)

Therefore, the average speed of the object is approximately 2.67 meters per second.