Question

Ravi runs 200 meter in 24 seconds. Find his average speed.

Answer 1

Speed =$\frac{distance}{time}$    

Distance travelled by Ravi = 200 meters

Time taken by Ravi to run 200 meters = 24 seconds

To find the average speed of Ravi  

substitute the given distance and time taken in the formula of average speed

Average Speed =$\frac{distance}{time}$=$\frac{200}{24}= (\frac{25}{3})$ m/sec  

Convert the obtained average speed into km/hr

Let’s convert m/sec to km/hr

1 m/sec= 3.6 km/hr=185 km/hr  

Speed =$(\frac{25}{3}) * (\frac{18}{5})$  

            =$5*(\frac{18}{3})$  

            =$\frac{90}{3}$= 30 km/hr

Hence the average speed is 30 km/hr