A train on its way took 10 seconds to cross a 50 m long bridge and 20 seconds to cross a 250 m long platform. How much time does the train require to cross a stationary man?
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Answer:
100
Explanation:
Distance= Speed * Time
Speed = Distance/Time
Train took 20 sec to cross 200 meter platform
Speed Of Train = 200/20 =10m/sec
Train took 10 sec to cross a pole.Sine we know that train is traveling with a speed of 10m/s.The distance train travelled from the pole is equal to it's length
Hence Length= Speed *Time =10*10=100m
Length of train =100m
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