a driver of a train moving at a constant speed of 25 metre per second is a goods train in the same track of 500 moving at a speed of 5 metre per second in the same direction what is the minimum retardation applying brake should he gives his trying to avoid collision
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The relative speed between the two trains is :
30 - 10 = 20m/s
This is the initial relative speed.
When brakes are applied the train slows down.
Given the acceleration = 4 m/s²
u = 20 m/s
With time the train comes to a sudden stop making the velocity 0.
V² = U² - 2as
0 = 400 - 8s
400 = 8s
S = 400/8
S = 50m
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