A runner covers the distance of 300 m in 10 s find out the average speed of the runner in m/ s ans km/h
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300m/10s = 30m/s
1 m/s = 1/1000/1/3600
= 1m/s= 1/1000*3600
= 18/5
30m/s*18/5 = 540/5
108km/h
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