What is the speed of train which overtakes a man walking at a speed of 5km/h in 30 second if the train is 274 meters long?
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What is the speed of train which overtakes a man walking at a speed of 5km/h in 30 second if the train is 274 meters long?
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Answer:
Step-by-step explanation:
we know that ..
distance
= time × speed
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speed of man
= 5km/h
= 5× 5/18 =25/18m/s
distance in 30 second
= 25/18×30=125/3=41.66 m
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so....
total distance
=41.66+ 274
=315.66 m
__________________________________________________________
speed of train
= distance / time
= 315.66/30
=10.52 m/s
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10.52m/s answer