Question

if a world - class sprinter ran a distance of 200 m starting at his top speed of 9 m/s and running with constant speed throughout, how long would it take him to cover the distance? the time required for the runner to cover 200 m is \boxed{} s.

Explanation:

Step1: Recall speed-distance formula

The formula relating speed, distance, and time is $t = \frac{d}{v}$, where $t$ is time, $d$ is distance, and $v$ is speed.

Step2: Substitute given values

Substitute $d=200\ \text{m}$ and $v=9\ \text{m/s}$ into the formula:
$t = \frac{200}{9}$

Step3: Calculate the value

$t \approx 22.22$

Answer:

$22.22$