Question

A train is moving eastwards with velocity of 10m/s .on a parallel track another train passes with a velocity of 15 m/s eastwards. To the passenger in the second train the first train will appaer to be moving with velocity of ..... pls tell the direction also.

Answer 1

let us consider the east direction as positive

V1=+10 m/s

V2=+15 m/s

V12=V1-V2

=10-15

=-5 m/s

therefore the passenger in 2nd train will feel as if the train 1 is moving in westward direction.

Answer 2

Answer: 5m/sec westwards

Explanation:Velocity of A with respect to B= velocity of A - velocity of B

=10-15

=-5m/sec

since velocity of A with respect to B = -5m/sec it goes westwards