Question

A train ,120 m long runs with a velocity 72 kmh–1; while train T, 130 m long is running in opposite direction with a velocity 108 kmh–1. The time taken by T to cross train is

(a) 5 sec

(b) 10 sec

(c) 25 sec

(d) 50 sec

Answer 1

Correct option (a) 5 sec

Explanation:

Velocity of * - train = 20 ms–1

Velocity of T - train = –30 ms–1

Relative vel. of T w.r.t. *