To determine the speed of a runner in the 100-meter dash, you need to divide the distance traveled (100 meters) by the time taken (10.5 seconds). The formula for speed is:
Speed = Distance / Time
Using the given values:
Speed = 100 meters / 10.5 seconds
Calculating this equation gives us:
Speed ≈ 9.52 meters per second
Therefore, the runner's speed in the 100-meter dash is approximately 9.52 meters per second.