Correct Answer - Option 4 : 720 m
Given:
A train that is running at speed of 72 km/hr crosses an electric pole in 36 seconds.
Concept used:
Distance = speed × time
Calculation:
Distance = 72 km/hr × 36 seconds
We need to find the distance in metres so convert the speed into metre/seconds
72 × (5/18) = 20 m/sec
Distance = 20 × 36
Distance = 720 m
