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

  • Thread starter Thread starter neutron star
  • Start date Start date
  • Tags Tags
    Graph
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?
 

Thread 'Finding the nth roots of a complex number'

There are two things I don't understand about this problem. First, when finding the nth root of a number, there should in theory be n solutions. However, the formula produces n+1 roots. Here is how. The first root is simply ##\left(r\right)^{\left(\frac{1}{n}\right)}##. Then you multiply this first root by n additional expressions given by the formula, as you go through k=0,1,...n-1. So you end up with n+1 roots, which cannot be correct. Let me illustrate what I mean. For this...
View full post »

Similar threads

Calculating Acceleration of a 2.60 kg Object with Given Tensions and Angle
Replies
1
Views
2K
Acceleration from Position vs Time^2 ?
Replies
1
Views
10K
Simple Pulley Ratios: Find T1, T2, T3, T4, T5, F
Replies
15
Views
14K
Find ε1: EMF Homework on Infinite Straight Wire & Conductor Loop
Replies
1
Views
3K
Projectile motion with a region of 0 acceleration
Replies
1
Views
2K
Average Velocity Graph: Determine its Values
Replies
1
Views
2K
This might be a silly question, that doesn't make sense, but I'll post
Replies
2
Views
2K
I need to find a velocity for a given t value, from a linear acceleration graph
Replies
4
Views
2K
What are the key concepts to consider when analyzing motion on an incline plane?
Replies
4
Views
6K
Why Does Kinetic Friction Apply When a Box Starts Sliding Down an Incline?
Replies
1
Views
3K

Hot Threads

Recent Insights

Back
Top