Q. 214.5( 2 Votes )

# The velocity of car is 18 ms^{-1}. Express this velocity in kmh^{-1}.

Answer :

Velocity of Car = 18 ms^{-1}

To express this velocity in kmhr^{-1} we need the conversion factor which is calculated as under:

1 km = 1000 m

So, 1 m = km

Now, 1 hr = 60 minutes = 60 × 60 s = 3600 s

So, 1 s = hr

Now, Velocity of car = 18

= 18

= kmh^{-1}

= 64.8 kmh^{-1}

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