The world record for the 100.0 meter dash is 9.580 seconds. Find the speed of the runner in miles per hour.

233.1 miles per hours

Explanation:

Speed: This is defined as the ratio of distance to time. The S. I unit of speed is m/s. speed is a vector quantity because it can only be represented by magnitude only. Mathematically, speed can be expressed as,

S = d/t ... Equation 1

Where S = speed of the runner, d = distance covered, t = time.

Given: d = 100 meter, t = 9.580 seconds

Conversion:

If, 1 meter = 0.00062 miles

Then, 100 meters = (0.00062*100) miles = 0.62 miles.

Also

If, 3600 s = 1 h

Then, 9.580 s = (1*9.580) / 3600 = 0.00266 hours.

Substitute into equation 1

S = 0.62/0.00266

S = 233.1 miles per hours.

Hence the runner speed is 233.1 miles per hours