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Mph means m/hr
so,to convert it to m/sec u should divide the no. by 60×60 or rather to say 3600
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what is m here?
m is metre....hope it will help u
1hour=60 minutes,nd 1minute=60seconds so 1hour=60 x 60 sec.to convert  m/hr =m/x 3600sec where x denotes the magnitude of hour
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