The speed of train is 30 km/h. How long will it take to cross a signal if its length is 25 m.?
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Speed of the train =30km/hr
length =25m
so the distance covered in 1 sec=25m speed =8.33m/s
distance=speed×time
25=8.33×t
t=25/8.33
time=3.00120048
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