Question

The driver of a train A running at 25 ms^-1 sights a train B on the same track with 15 ms^-1. The driver of train A applies brakes to produces a deceleration of 1.0 ms^-2. If the trains are 200 m apart, will the trains collide?

• A. Yes
• B. No`
• C. Collision just avoided
• D. None of these

Answer 1

Answer: (C)

Collision just avoided

Answer 2

v² – u² = 2as or s = $\frac{25^{2} - 15^{2}}{2 \times 1}$= 200 m.