Kinetics with Veloctiy/Acceleration Problem

  • Thread starter Thread starter azn1x6flame
  • Start date Start date
  • Tags Tags
    Kinetics
Click For Summary
SUMMARY

The discussion focuses on solving a velocity problem involving the function v(t) = 3t - 11 for a particle moving along a line over the interval [0, 5]. The user initially calculates the velocity at t=5, obtaining a value of 4 m/s, but fails to find the total distance traveled. The correct approach involves calculating the anti-derivative of the velocity function, which is the integral of v(t). The user attempts to compute the integral but arrives at an incorrect result of -17.5 instead of the expected 137/6.

PREREQUISITES
  • Understanding of velocity and acceleration concepts
  • Knowledge of anti-derivatives and integration techniques
  • Familiarity with polynomial functions
  • Basic calculus skills, specifically the Fundamental Theorem of Calculus
NEXT STEPS
  • Review the process of finding the anti-derivative of polynomial functions
  • Study the Fundamental Theorem of Calculus for evaluating definite integrals
  • Practice problems involving velocity and distance calculations
  • Learn about the relationship between velocity, acceleration, and displacement
USEFUL FOR

Students studying calculus, particularly those focusing on motion problems involving velocity and acceleration, as well as educators looking for examples of common student misconceptions in integration.

azn1x6flame
Messages
3
Reaction score
0
Hello, I need help on this following problem on velocity/acceleration

1. Homework Statement

The velocity function (in meters per second) is given for a particle moving along a line.

v(t)=3t-11, 0 (greater than or equal to) t (greater than or equal to) 5

Find the distance (in meters) traveled by the particle during the given time interval2. Homework Equations

v(t)=3t-11, 0 (greater than or equal to) t (greater than or equal to) 5

3. The Attempt at a Solution

I tried the following:
3(5)-11=4

But it isn't correct, can someone help me with this problem?

I know I have to find the anti-derivative of v(t).

How would I find t? Do I have to do the derivative of v(t) to find acceleration? Would that help me do this problem?

Can someone help me with this problem?

Thanks
 
Physics news on Phys.org
I tried the following:
3(5)-11=4

That's the velocity of the particle at t=5. It's not the total distance travelled.

I know I have to find the anti-derivative of v(t).

How would I find t? Do I have to do the derivative of v(t) to find acceleration? Would that help me do this problem?

The anti-derivative is just the integral. Do you know how to find the integral of a polynomial?
 
ideasrule said:
That's the velocity of the particle at t=5. It's not the total distance travelled.
The anti-derivative is just the integral. Do you know how to find the integral of a polynomial?

Yes. This is what I have so far and it's coming up negative:

3/2*t^2-11*t from 0 to 5, so 3/2*25-55 -0 = 125/2-55=-17.5

Whereas the answer book is showing: 137/6

So for some reason, my answer isn't totaling correctly
 

Similar threads

  • · Replies 13 ·
Replies
13
Views
1K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 17 ·
Replies
17
Views
3K
  • · Replies 8 ·
Replies
8
Views
1K
Replies
1
Views
2K
Replies
2
Views
1K
  • · Replies 5 ·
Replies
5
Views
1K
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 6 ·
Replies
6
Views
1K
  • · Replies 8 ·
Replies
8
Views
2K