An electric engine has a velocity of 120 kmh-1. How much distance will it travel in 30s?
Now, 
= 120 kmh-1
= 
ms-1
= 
ms-1
Now, time = 30 s
Hence, Distance = 
× time
= 
= 1000 m
= 1 km
Hence, the distance travelled by the electric engine in 30 s is 1 km.
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