Final answer:
The average velocity for the first 4 seconds can be found by finding the slope of the position vs. time graph during that time interval.
Step-by-step explanation:
The average velocity for the first 4 seconds can be determined by finding the slope of the position vs. time graph during that time interval. To do this, divide the change in position by the change in time. For example, if the position at t = 0 s is 2 m and the position at t = 4 s is 10 m, the change in position is 10 m - 2 m = 8 m. The change in time is 4 s - 0 s = 4 s. So the average velocity is 8 m / 4 s = 2 m/s.