Position time graph of object moving in a straight line

In summary, the diagram tracks the location of an object moving in a straight line along the x-axis. The farthest point from the origin is at point B, where the object has the greatest distance from the x-axis. The object is at rest for an instant at points B and D, where it changes from a positive to a negative slope and has no velocity. It is also in the midst of being at rest for a while at point E, with a straight horizontal line on the graph. The object is moving away from the origin at point A. The equation for velocity is displacement divided by time.
  • #1
KendraSan
3
0

Homework Statement


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)

Homework Equations



velocity = displacement/time

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 isn't quite accurate its supposed to be a straight horizontal line there), and moving away from the origin at A.
 
Last edited:
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  • #2
yes, you are right
 

1. What is a position-time graph?

A position-time graph is a visual representation of an object's position over time as it moves in a straight line. It shows the relationship between an object's position (y-axis) and time (x-axis).

2. How is the slope of a position-time graph calculated?

The slope of a position-time graph is calculated by dividing the change in position (Δy) by the change in time (Δx). This is also known as the average velocity of the object.

3. How can you determine an object's velocity from a position-time graph?

The velocity of an object can be determined by finding the slope of the position-time graph at a specific point. The steeper the slope, the greater the velocity of the object.

4. What does a horizontal line on a position-time graph represent?

A horizontal line on a position-time graph represents an object at rest. This means that the object's position is not changing over time.

5. How can you tell if an object is moving at a constant velocity from a position-time graph?

If the slope of a position-time graph is a straight line, the object is moving at a constant velocity. This means that the object is moving at a consistent speed and direction over time.

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