Question

An athlete can run 100m in 11 seconds. Calculate the athlete's speed in-

metre's per second, and

kilomstres per hour

Answer 1

m/s = 100/11

km/hr=100/11*1/1000*3600

Answer 2

100m/11s=9.0909091m/s
in km/hr:
(9.0909091m/s)/1000=0.00909091km;
(0.00909091)*3600=32.72724km/hr; (1hr=3600s)