Question

A sprinter cover a distance in 100m in just 9.83 seconds.
Find the average speed of the sprinter in km/h



let's see who will answer first...​

Answer 1

Answer:

36.61 km/hr.

Explanation:

Distance = 100m

Time = 9.83 s

Speed = Distance/Time

= [100/9.83] m/s

= 10.17 m/s

Now,

Speed in km/hr = [10.17*18/5] km/hr

= 36.61 km/hr

Hope this helps.

Answer 2

Answer :

The average speed of the sprinter is 36.612 km/h

Step-By-step Explanation :

We are given, a sprinter covers a distance of 100m in 9.83 seconds. And we have to calculate the speed of the sprinter in km/h

First all find speed in m/s

$\sf{Speed \: = \: \dfrac{Distance}{Time}} \\ \\ \implies {\sf{Speed \: = \: \dfrac{100}{9.83}}} \\ \\ \implies {\sf{Speed \: = \: 10.17}}$

•°• Average speed travelled by the Sprinter in m/s is 10.17 m/s

Now, we have to calculate the speed in km/h. For calculating in km/h we will multiply the speed by 3600/1000.

$\implies {\sf{Speed \: = \: 10.17 \: \times \: \dfrac{3600}{100}}} \\ \\ \implies {\sf{Speed \: = \: 10.17 \: \times \: \dfrac{18}{5}}} \\ \\ \implies {\sf{Speed \: = \: 10.17 \: \times \: 36.612}} \\ \\ \implies {\sf{Speed \: = \:36.612 }}$

•°• Average speed in km/h is 36.612 km/h