The world record for the 100-meter dash is 9.8 s. If the world record holding runner could maintain the same pace when running five kilometers, he would cover the distance in ________.

Question

Quizplus · Accepted Answer

To find the time it would take the runner to run 5 kilometers at the same pace as the 100-meter dash, we need to convert the distance from meters to kilometers and the time from seconds to minutes.

Distance: 
1 kilometer = 1000 meters 
5 kilometers = 5000 meters

Time: 
9.8 seconds = 9.8/60 minutes (since 1 minute = 60 seconds) 
9.8/60 minutes = 0.16333 minutes

Now we can use the formula: 
Time = Distance/Speed

Speed is the same as the pace, which is the time it takes to run 1 meter. In this case, it's 9.8 seconds (the world record pace).

Time = 5000/9.8 
Time = 510.2 seconds

Converting this back to minutes: 
510.2/60 = 8.5 minutes

Therefore, the answer is B) 8.2 min (rounded to one decimal place).

The World Record for the 100-Meter Dash Is 9