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270×1000÷60×60 =--ms
(1)
We know that 1 hour = 60 minutes
Given Speed = 45 km/hr = 45 km/1 hour = 45 km/60 minutes
We know that Distance = Speed * Time
= 45 * 60
= 2700km.
(2)
We know that 1 km/hr = (1000/3600) = (5/18) m/s.
Given : 270 km/hr
= > 270 * (5/18)
= > 15 * 5
= > 75 m/sec.
Hope this helps!