Question

if a sprinter runs a distance of 100 metres in 7.6 seconds, calculate his average speed in kilometre per hour in metre per second​

Answer 1

Average speed= 1000/76 m/s

=1000×60×60/76×1000

=3600/76

=47.3km/h

Answer 2

Explanation:

average speed=distance /time

=100/7.6

=250/9m/s

km/h

250/19×18/5

900/19km/h