Position-Time Graphs & Velocity Video Lessons

Video Thumbnail

Concept

Problem: The figure below shows the position-versus-time graph for a moving object. At which lettered point(s):(a) Is the object moving the slowest?(b) Is the object moving the fastest?(c) Is the object at rest?(d) Is the object moving to the left?

FREE Expert Solution

This problem asks us to describe the direction and relative magnitude of the object's velocity at various points based on its position-time graph.

Anytime we're given a position, velocity, or acceleration graph to work with, a PVA diagram like the one below can help remind you of the relationships between the three functions.

PVslopeareaA

Moving left to right, we take the slope of the graph—the slope of a position graph is the velocity

Horizontal lines have zero displacements (Δx) and zero slopes. The diagram below demonstrates how magnitude of a slope varies.  

(a) We're asked to determine at which point the object is moving the slowest. 

87% (208 ratings)
View Complete Written Solution
Problem Details

The figure below shows the position-versus-time graph for a moving object. At which lettered point(s):
(a) Is the object moving the slowest?
(b) Is the object moving the fastest?
(c) Is the object at rest?
(d) Is the object moving to the left?

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Position-Time Graphs & Velocity concept. You can view video lessons to learn Position-Time Graphs & Velocity. Or if you need more Position-Time Graphs & Velocity practice, you can also practice Position-Time Graphs & Velocity practice problems.