Question

Table C: Average Speeds for Lower Racetrack

Time (Initial)
(s)
1st of the Track
2nd % of the Track
3rd of the Track
Final 4 of the Track
0
2.07
3.16
4.11
Time (Final)
(s)
2.07
3.16
4.11
Elapsed Time
(s)
2.07
1.09
0.95
Average Speed
(m/s)

Answer 1

The average speed of the sprinter for the first 4 seconds is 9.09 m/s.

The average speed of the sprinter for the first 4 seconds can be calculated by dividing the total distance covered in the first 4 seconds by the time taken. The average speed is given by:

Average Speed = Total Distance / Time

In this case, the average speed is given as 9.09 m/s. Since the sprinter did not run at this speed for the entire race, his top speed must be greater than 9.09 m/s to compensate for the slower speed at the beginning of the race. Therefore, his top speed must be greater than 9.09 m/s so that his average speed over the entire race becomes 9.09 m/s.