# Homework Help: Position time graph of object moving in a straight line

1. Sep 14, 2011

### KendraSan

1. The problem statement, all variables and given/known data
The diagram (http://i83.photobucket.com/albums/j282/missingyoub4urgone/Physicsyahoohelp.png) tracks the location of an object moving in a straight line along the x-axis. When is the object (a) farthest from the origin, (b) at rest for an instant, (c) in the midst of being at rest for a while, and (d) moving away from the origin?

(assume t=0 is the origin)

2. Relevant equations

velocity = displacement/time

3. The attempt at a solution

I thought it was farthest away at B(because that point is the greatest distance from the x-axis); at rest for an instant at B and D because its changing from positive slope to negative, thus has no velocity, at rest for a while E (the graph probably isnt quite accurate its supposed to be a straight horizontal line there), and moving away from the origin at A.

Last edited: Sep 14, 2011
2. Sep 14, 2011

### issacnewton

yes, you are right