a cyclist travels a distance 9km in 30 minutes. calculate the speed of the cyclist in
a] kmh-1
b] ms-1
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Answer:
18km/h
5m/sec
Explanation:
a) 30 minutes = 1/2 hour
speed in km/h = 9km/(1/2)h = 18km/h
b) 30 minutes = 30×60 sec = 1800sec
9km = 9×1000m = 9000m
speed in m/s = 9000m/1800sec = 5m/sec
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