A cyclist covers 1.6 km in 6 min find his speed in km/hour?
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Answer: 16 km / hr
Answer: Formula distance = speed × time
given distance 1.6 km or 1.6 × 1000m = 1600m
time = 6 min or 6×60sec = 360sec
from formula speed formula becomes
speed = distance÷ time
putting values
1600/360 =160/36 cancelling by 4
speed = 40/9 m/s
{point to be remember to change speed from meter per second to km/ hr always multiply with 18/5 }
( to change speed from km / hr to m/s always multiply with 5/18 )
so here to change 40/9 ms to km/hr multiply with 18/5
40/9 × 18/5 = 16 km/ hr
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