A man riding his bicycle covers 150 meters in 25 seconds. What is his speed in km/hr?
20 km/hr
21.6 km/hr
23 km/hr
25km/hr
Distance = 150 m
Time = 25 s
Step 1 : speed in m/s = 150/25 = 6 m/s
Step 2 : convert km/hr = 6 x 18/5:=21.6 km/hr
Answer : option 2( 21.6 km/hr )