The driver of a train moving with a speed v 1 sights another train at a distance s, ahead of him moving in the same direction with a slower speed v 2 ,. He applies the brakes and gives a constant deceleration a to his train. For no collision, s is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
To avoid collision, the faster train should come to rest after covering a distance d. Using v 2 – u 2 = 2aS we get
0 – V n 2 = 2(-a)d
(where V n = v 1 – v 2 )
or d = 
Collision can be avoided if
d > 
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