Final answer:
The average velocity required for the skateboarding child to cover 28 meters in 8 seconds is 3.5 m/s.
Step-by-step explanation:
The student is asking about the average velocity required for a skateboarding child to travel the length of a basketball court, which is 28 meters, in 8 seconds. To calculate the average velocity, we use the formula: average velocity = total distance / total time.
In this case, the total distance is 28 meters and the total time is 8 seconds.
So the calculation would be: average velocity = 28 meters / 8 seconds = 3.5 meters per second (m/s).