Convert 20m/sec to 72Km/hr
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Step-by-step explanation:
1m = 1/1000 km
1s = 1/60×60 hrs
20m/s = 20 ×1/1000 ÷ 1/60×60
= 20 ×60×60/1000 kmph
= 6×2×6 = 72kmph
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