For a train engine moving with speed of 
, the driver must apply brakes at a distance of 
before the station for the train to come to rest at the station. If the brakes were applied at half of this distance, the train engine would cross the station with speed 
. The value of 
is___
(Assuming same retardation is produced by brakes)
Text Solution
Verified by Experts200
(200)
By using 
equation of motion
as
as
acceleration of the train, 
Now, if the brakes are applied at 
i.e. half of the distance
as
Given 
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