why does a person sitting in one train think that the other train is at rest, when both the trains - Physics - Motion In A Straight Line

Question

why does a person sitting in one train think that the other
train is at rest, when both the trains are moving on parallel
tracks with the same speed and in the same direction ?

Natsu Ojha · Answer

It is so because the relative velocity will be zero
Relative velocity is the velocity with which an object moves w r t
another object Hence, the relative velocity is defined as the time
rate of change of relative position of one object w r t the other
Lets understand it using an example If an object A moving with
velocity 35km/h due to east and another object B moving with
velocity 70km/h due to west i e -70km/h due to east Then, the
relative velocity of A w r t B i e Due to eastAnd the relative
velocity of B w r t A will beDue to westHope, you this explanation
clears you the concept Best wishes!!

PSThis answer was posted byIshan Goyal

why does a person sitting in one train think that the other train is at rest, when both the trains are moving on parallel tracks with the same speed and in the same direction ?