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By seeing a person on the railway track 200m away the engine driver suddenly aplies the break.The speed of the train is reduced from 90km/h to 36km/h in 5second.Calculate the stopping distance?wil the person escapes?

Asked by Aarsha Vijayan 5th January 2012, 7:47 AM
Answered by Expert
here final vel=v=36km/h=10 m/s
initial vel=u=90km/h=25 m/s
find a from v=u-at    a=3 m/s2
put this value in prev equation: s=87.5 m
so the person will be able to escape.  as  200m<87.5m
Answered by Expert 5th January 2012, 9:45 AM
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