Question

In 200920092009, Usain Bolt set the world record for sprinting 100 \text{ m}100 m100, start text, space, m, end text in approximately 9\dfrac359 5 3 ​ 9, start fraction, 3, divided by, 5, end fraction seconds

Answer 1

Answer:

Average speed = 10.41 m/s

Step-by-step explanation:

It is given that, in 2009, Usain Bolt set the world record for sprinting 100 m on 9 3/5 seconds.

It can be assumed to find her average speed. Speed is equal to total distance covered divided by total time taken.

$v=\dfrac{d}{t}\\\\v=\dfrac{100\ m}{9\dfrac{3}{5}\ s}\\\\=\dfrac{100}{\dfrac{48}{5}}\ m/s\\\\=\dfrac{500}{48}\ m/s\\\\=10.41\ m/s$

So, the average speed of Usain Bolt is 10.41 m/s.

Answer 2

Answer:

the answer is kind of 10.41 but the real answer is 10 5/12 (khan academy)

Step-by-step explanation:

just trust me ;)