Arrange the following speeds in increasing order (keeping the least speed first) :

(i) An athlete running with a speed of 20 m/s.


(ii) A bicycle moving with a speed of 400 m/min.


(iii) A scooter moving with a speed of 60 km/h.

Speed of athelete = 20 m/s

Speed of bicycle = 400 m/min = 400/60 m/s = 6.66 m/s


Speed of scooter = 60 km/h = 60000/3600 m/s = 16.66 m/s


6.66 m/s < 16.66 m/s <20 m/s


i.e. 400 m/min < 60 km/h < 20 m/s


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