1 km h-1 = ? a) 5Ms-1 b) 18s-1 c) 18/5Ms-1 d) 5/18 m s-1
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Answer & Explanation:
1 km = 1000m
1 hour = 60 x 60 = 3600s
1000 / 3600 = 5/18 ms^-1
therefore answer is D
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