Question

A local train, whose length is 80 meters, runs at 67.5
km/hr and surpasses another local train moving in the
direction in 36 seconds. If the trains were going in
opposite directions with their respective speeds, they
would have crossed each other in 4.5 seconds. Find the answer​

Answer 1

$hii$

Step-by-step explanation:

Relative speed when two objects move in opposite directions is the sum of their individual speeds.

=> Relative Speed = 62 + 40 = 102 kmph

= 102 x 5/18 m/s

The Distance travelled in 18 seconds is 102 x 5/18 x 18 = 510 m and it is equal to the sum of length of the two trains.

=> Length of second train = 510 - 250 = 260m