Question

In 2009, Usain Bolt set the world record for sprinting 100 m in approximately 9 and 5/ 3 seconds. Find his average speed in meters per second.

Answer 1

The average speed of Usain Bolt is 9.38 m/s

Explanation:

It is given that,

Distance covered by Usain Bolt, d = 100 m

Time taken,
`t=9(5)/(3)\ s=10.66\ s`

Let v is the average speed of Usain Bolt. The total distance covered divided by total time taken is called the average speed of an object. Mathematically, it is given by :

`v=(d)/(t)`

`v=(100\ m)/(10.66\ s)`

v = 9.38 m/s

So, the average speed of Usain Bolt is 9.38 m/s. Hence, this is the required solution.