Question

world class runners
mens running world records (as of fall 2022)
distance (m) men’s record holder country time calculate the runner’s speed
100 usain bolt jam 9.58 sec 10.44
200 19.19 sec 10.42 m/s
400 wayde van niekerk rsa 43.03 sec 9.295
800 david lekuta rudisha ken 1 min 41.91 sec 563.7
1000 noah ngeny ken 2 min 11.96 sec 4.717
1500 hicham el guerrouj mar 3 min 26 sec
1 mile (1609.3 meters) 3 min 43.13 sec
3000 daniel komen ken 7 min 20.67 sec
5000 kenenisa bekele eth 12 min 37.35 sec
10,000 26 min 17.53 sec

Explanation:

Step1: Recall speed formula

Speed $v=\frac{d}{t}$, where $d$ is distance and $t$ is time.

Step2: Convert time to seconds for 1 - mile record

3 min 43.13 sec = $3\times60 + 43.13=180 + 43.13 = 223.13$ sec, $d = 1609.3$ m.

Step3: Calculate speed

$v=\frac{1609.3}{223.13}\approx7.21$ m/s.

Step4: Convert time to seconds for 3000 - m record

7 min 20.67 sec=$7\times60+20.67 = 420+20.67=440.67$ sec, $d = 3000$ m.
$v=\frac{3000}{440.67}\approx6.81$ m/s.

Step5: Convert time to seconds for 5000 - m record

12 min 37.35 sec=$12\times60 + 37.35=720+37.35 = 757.35$ sec, $d = 5000$ m.
$v=\frac{5000}{757.35}\approx6.60$ m/s.

Step6: Convert time to seconds for 10000 - m record

26 min 17.53 sec=$26\times60+17.53=1560 + 17.53=1577.53$ sec, $d = 10000$ m.
$v=\frac{10000}{1577.53}\approx6.34$ m/s.

Answer:

For 1 - mile: 7.21 m/s; For 3000 m: 6.81 m/s; For 5000 m: 6.60 m/s; For 10000 m: 6.34 m/s