What is your velocity when walking on a moving train in the opposite direction?

[aruji73]

You are on a train traveling east at speed of 14.0 m/s with respect to the ground.

if you walk west toward the back of the train, with a speed of 1.4 m/s with respect to the train, what is your velocity with respect to the ground?

I got the answer as 12.6 m/s east but is my answer going to be positive or negative

 

[Doc Al]

I got the answer as 12.6 m/s east but is my answer going to be positive or negative

12.6 m/s east is correct. If you said negative 12.6 m/s east, that would mean it was going to the west, which is not correct.

You're giving a magnitude (which is always positive) and a direction.

 

[tms]

That depends on which direction is positive and which negative.