Question

In 2009, usain bolt of jamaica set a world record of 9.58s in the 100m dash. what was his average speed?

Answer 1

speed is distance / time

and so 100m / 9.58 s = 10.4 m/s

Answer 2

His average speed is 10.43 m/s.

Step-by-step explanation:

Given that,

Distance covered by Usain bolt, d = 100 m

Time taken, t = 9.58 s

We need to find his average speed. It can be calculated using the formula of average speed as :

`v=(d)/(t)`

`v=(100\ m)/(9.58\ s)`

v = 10.43 m/s

So, his average speed is 10.43 m/s. Hence, this is the required solution.