Question

the trains are each 50m long moving parallel towards each other at speeds 10m/s and 15m/s respectively. after what time will they pass each other? ​

Answer 1

Question:-

 Two trains are each 50m long moving parallel towards each other at speeds 10m/s and 15m/s respectively.After what time will they pass each other?

Answer:-2 second

Solution:

The relative velocity of two trains is

$v = v1 + v2$

$10 + 15 = 25m {s}^{ - 1}$

The time at which they pass each other is

$t = \frac{d}{v}$

$\frac{50}{25} = 2$

_________

At 2 second they will pass each other