Question

In 2009, Usain Bolt of Jamaica set a world record of 9.58 s in the 100 m dash. What was his average speed? Give your answer in kilometers per hour.​

Answer 1

Below

Step-by-step explanation:

To find the average speed of a person you can use this formula :

Velocity = distance / time

Plugging in our values ...

Velocity = 100 m / 9.58 s

= 10. 4384... m/s

To convert m/s to km/h, multiply the speed by 3.6

10.4384133612 x 3.6 = 37.578288100317 km/h

= 37.6 km/h

*if your teacher says to round to 1 sig fig because of the 100m then round it to 40 km/h*

Hope this helps! Best of luck <3