Question

In 2009, usain bolt set the world record for sprinting 100 m in approximately 9 3/5 a second.

find his average speed in meter per second

Answer 1

10 5/12

​ 10, start fraction, 5, divided by, 12, end fraction

Explanation:

Answer 2

The average speed of usain bolt in meter per second is
`10(5)/(12)`.

Explanation:

It is given that usain bolt set the world record for sprinting 100 m in approximately 9 3/5 a second.

Formula for average speed.

`speed=(distance)/(time)`

Given distance is 100 m and time in sec is

`9(3)/(5)=(45+3)/(5)=(48)/(5)`

The average speed in meter per second is

`speed=(100)/((48)/(5))`

`speed=(500)/(48)`

`speed=(125)/(12)`

`speed=10(5)/(12)`

Therefore the average speed of usain bolt in meter per second is
`10(5)/(12)`.