A train 400 m long crosess at a telegraph post in 20 seconds
find speed of train in km/he
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Step-by-step explanation:
Speed of the train = 72 km/hr = 20 m/ s
length of the train = distance covered by the train = 400m
As we know that Speed = distance/ time
time = distance/ speed
t = 400 / 20 = 20 sec
Answered by
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Answer:
Step-by-step explanation:
distance=400m
speed=20m/s
time=distance/speed
=400/20
=20 seconds
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