An athlete runs 200 metres race in 24 seconds. What is his speed?
30.5 km/hr
20 km/hr
35 km/hr
30 km/hr
Explanation:
speed=distance/time=200/24 m/s
=200/24×18/5 km/hr
=(40×3)/4 km/hr=30 km/hr
speed=distance/time=200/24 m/s
=200/24×18/5 km/hr
=(40×3)/4 km/hr=30 km/hr