Question

In August 2009 2009 2009 2009 , Usain Bolt ran 100 100 100 100 meters in 9.58 9.58 9.58 9, point, 58 seconds ( sec ) (\text{sec}) (sec) left parenthesis, start text, s, e, c, end text, right parenthesis , setting the world record at that time. There are approximately 1.094 1.094 1.094 1, point, 094 yards ( yd ) (\text{yd}) (yd) left parenthesis, start text, y, d, end text, right parenthesis in a meter. What was Usain Bolt's average speed in yards per second?

Answer 1

v = 11.41 yards/second

Explanation:

Given that,

In August 2009, Usain Bolt run 100 m in 9.58 seconds.

1 yard = 0.9144 m

It means,

100 m = 109.361 yards

We need to find Usain Bolt's average speed in yards per second.

Average speed = total distance/time taken

`v=\frac{109.361\ \text{Yards}}{9.58\ \text{seconds}}\\\\=11.41\ \text{Yards/second}`

So, her average speed is 11.41 yards/second.