- #1

shawli

- 78

- 0

## Homework Statement

A train moving at a constant speed of 100km/h travels east for 40min, then 30

^{o}east of north for 20 min, and finally west for 30min. What is the train's average velocity for the trip?

## Homework Equations

## The Attempt at a Solution

I think I have to calculate displacement from the given velocities, using vector components for 100km/h [30

^{o}E of N]. Then I find the total x displacement and total y displacement and divide by time (1.5h) to find the x and y velocities. I'm not sure what to do after this :S.