A train cover a distance of 12km in 10min. If it takes 6sec to pass an electric pole,
then the length of a train is in metre
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distance = 12km = 12 × 1000m = 12000m
time = 10 min = 10 × 60 seconds = 600 seconds
speed = distance/time
speed = 12000m/600s
speed = 20m/s
time taken to cross the pole =6 seconds
distance travelled in 6 seconds = speed × time
= 20m/s × 6s
= 120m
so the length of the train is 120m
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