Question

When a driver of Shatabdi Express, running with velocity 108 km/hr, sights a goods train going ahead of him at a distance 50 m in the same direction on the same track, running with velocity72 km/hr, he applies brakes. In order to avoid an accident, what should be the magnitude of the deceleration produced by the brakes?
(A) 5 ms–2

(B) 1 ms–2

(C) 3 ms–2

(D) None of these​

Answer 1

Answer:

1 m/s^2

Explanation:

relative velocity is 108- 72 = 36

by applying 2as = v^2- u^2, we get the answer.