F(t) values graph, why doesn't this make sense?

  • Thread starter Thread starter neutron star
  • Start date Start date
  • Tags Tags
    Graph
Click For Summary

Homework Help Overview

The discussion revolves around interpreting a graph of force values over time, specifically focusing on the relationship between acceleration and velocity at various time points. The subject area includes concepts from dynamics and kinematics.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to understand why certain values for acceleration and velocity appear incorrect, questioning their assumptions about the behavior of these quantities at specific time intervals.

Discussion Status

Some participants provide insights into the relationship between velocity and acceleration, noting that acceleration can be positive or negative depending on the behavior of velocity. There is an ongoing exploration of the original poster's concerns, with no explicit consensus reached.

Contextual Notes

The original poster expresses confusion about the values for acceleration and velocity, suggesting a potential misunderstanding of the physics concepts involved. There are indications of multiple interpretations regarding the graph's implications.

neutron star
Messages
78
Reaction score
1

Homework Statement


http://img35.imageshack.us/img35/7035/picture18hl.png
http://img195.imageshack.us/img195/7315/picture19dq.png



http://img171.imageshack.us/img171/7427/picture20e.png
http://img16.imageshack.us/img16/8384/picture21v.png

Homework Equations





The Attempt at a Solution


I don't know why the values for c and e seem wrong to me. Shouldn't acceleration be positive at only t2 and t3? And velocity decreasing at t1, t4, and t5? Am I thinking of this the wrong way or too much like a physics problem?
 
Last edited by a moderator:
Physics news on Phys.org
Acceleration is positive at t1 and t2, because the velocity is increasing at those points. Notice that at t3, the velocity is decreasing, which makes the acceleration negative at that point.

Velocity is decreasing at t3, t4, and t5. Not coincidentally, the acceleration is negative at these points.
 
It said incorrect...
 
neutron star said:
It said incorrect...
It said incorrect for what?
 

Similar threads

Calculating Acceleration of a 2.60 kg Object with Given Tensions and Angle
  • · Replies 1 ·
Replies
1
Views
2K
Acceleration from Position vs Time^2 ?
  • · Replies 1 ·
Replies
1
Views
11K
Simple Pulley Ratios: Find T1, T2, T3, T4, T5, F
  • · Replies 15 ·
Replies
15
Views
14K
Find ε1: EMF Homework on Infinite Straight Wire & Conductor Loop
  • · Replies 1 ·
Replies
1
Views
3K
Projectile motion with a region of 0 acceleration
  • · Replies 1 ·
Replies
1
Views
2K
Average Velocity Graph: Determine its Values
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad This might be a silly question, that doesn't make sense, but I'll post
  • · Replies 2 ·
Replies
2
Views
2K
I need to find a velocity for a given t value, from a linear acceleration graph
  • · Replies 4 ·
Replies
4
Views
3K
What are the key concepts to consider when analyzing motion on an incline plane?
  • · Replies 4 ·
Replies
4
Views
6K
Why Does Kinetic Friction Apply When a Box Starts Sliding Down an Incline?
  • · Replies 1 ·
Replies
1
Views
3K