# Homework Help: Resultant displacement

1. Sep 23, 2008

### bigzee20

Hi everyone my first post!!! Iam stuck in this problem idk if iam getting the answer right. My solution was 133 is this correct? Thanks for your help.

1. The problem statement, all variables and given/known data
While John is traveling along a straight interstate highway, he notices that the mile marker reads 244 km. John travels until he reaches the 145 km marker and then retraces his path to the 179 km marker.
What is John's resultant displacement from the 244 km marker? Answer in units of km.

2. Relevant equations

3. The attempt at a solution

2. Sep 23, 2008

### bigzee20

3. Sep 23, 2008

### Mattowander

This has to do with vector addition.

The easiest way to do this problem would be to compare the starting and ending points. The answer you're trying to find is the difference between final position and initial position.

4. Sep 23, 2008

### bigzee20

I got it man is -65. THANKS!!!!!!!!!!!!!!! I really appreciate it lets c if i dont get stuck in any other questions lol.

5. Sep 23, 2008

No problem