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.

Question

9.3 m/s

10.8 m/s

356 m/s

3.8 m/s

Answer 1

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.