Answer:

Step-by-step explanation:
Given:
Represent
- Susan's velocity with

- Michael's velocity with

eastwards
westwards
Required
Determine how fast is
relative to

From the question, one train moves eastwards while the other moves westwards.
This means that travel in opposite travel and the relative speed (V) is calculated as:

Substitute values for
and



Hence, the Susan's train is moving 2m/s in relative to Michael's train