The current men’s world record for the 400 m race is held by Wayde van Niekerk of South Africa, with a time of 43.03 s. Determine the average speed of the runner.
9.3 m/s
10.8 m/s
356 m/s
3.8 m/s
The average speed can be calculated by dividing the distance (400 meters) by the time (43.03 seconds):
400 meters / 43.03 seconds = 9.3 m/s
Therefore, the average speed of the runner is 9.3 m/s. Answer: 9.3 m/s.
To determine the average speed of the runner, we can use the formula:
Average speed = Distance / Time
In this case, the distance is 400 meters and the time is 43.03 seconds.
Average speed = 400 meters / 43.03 seconds
Calculating this gives us an average speed of approximately 9.3 meters per second.
Therefore, the correct answer is 9.3 m/s.