numerical question
Show that 1 km/h = 5/18 m/s

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Solution

1km/hr = 5/18 m/s
Proof : 1km = 1000m and 1 hr= 60x60 sec = 3600 sec
So 1km/hr = 1000m/3600s = 10/36 m/s = 5/18 m/s
So we can generalize this as x km/hr= 5x/18 m/s
Hope this helps

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