A particle moves according to a law of motionst), ta 0, where t is measured in seconds and s in feet. (If an answer does not exist, enter DNE.) ) =- 9r+ 24 (a) Find the velocity (in Us) at time t. vt) - 3(1-4)(1-2) n/s (b) What is the velocity (in f/s) after 1 second? 1)=9 (c) When is the partide at rest? (Enter your answers as a comma-separated list.) t=2,4 (d) When is the particle moving in the positive direction? (Enter your answer using interval notation.) (0,2)u (4,0) 4, (e) Draw a diagram to llustrate the motion of the particle and use it to find the total distance (in n) traveled during the first 6 seconds. (t) Find the acceleration (in ts) at time t.

Calculus: Early Transcendentals
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Author:James Stewart
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Chapter1: Functions And Models
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```markdown
### Particle Motion Analysis

A particle moves according to a law of motion \( s = f(t) \), where \( t \) is measured in seconds and \( s \) in feet. If an answer does not exist, enter DNE.

**(a)** Given \( s(t) = 3t^2 - 2t^3 + 24 \), find the velocity \( v(t) \) at time \( t \).

\[
v(t) = \frac{d}{dt}[3t^2 - 2t^3 + 24] = 6t - 6t^2
\]

**(b)** Find the velocity \( v(1) \) after 1 second. 

\[ 
v(1) = 6(1) - 6(1)^2 = 0 
\]

**(c)** When is the particle at rest? (Enter your answers as a comma-separated list.)

To find when the particle is at rest, solve:

\[ 
6t - 6t^2 = 0 
\]

\[ 
6t(1 - t) = 0 
\]

\[ 
t = 0, 1 
\]

**(d)** When is the particle moving in the positive direction? (Enter your answer using interval notation.)

The particle is moving in the positive direction when \( v(t) > 0 \).

\[ 
(0, 1) \cup (4, \infty) 
\]

**(e)** Draw a diagram to illustrate the motion of the particle and use it to find the total distance (in ft) traveled during the first 6 seconds.

**(f)** Find the acceleration \( a(t) \) at time \( t \).

\[
a(t) = \frac{d}{dt}[6t - 6t^2] = 6 - 12t
\]

Find the acceleration \( a(1) \) after 1 second.

\[
a(1) = 6 - 12(1) = -6 
\]

**(g)** Graph the position, velocity, and acceleration functions for \( 0 \leq t \leq 6 \).

#### Explanation of Graph

- **Position Function**: The blue curve represents the position over time, showing how the particle's location changes.
- **Velocity Function**: The red curve
Transcribed Image Text:```markdown ### Particle Motion Analysis A particle moves according to a law of motion \( s = f(t) \), where \( t \) is measured in seconds and \( s \) in feet. If an answer does not exist, enter DNE. **(a)** Given \( s(t) = 3t^2 - 2t^3 + 24 \), find the velocity \( v(t) \) at time \( t \). \[ v(t) = \frac{d}{dt}[3t^2 - 2t^3 + 24] = 6t - 6t^2 \] **(b)** Find the velocity \( v(1) \) after 1 second. \[ v(1) = 6(1) - 6(1)^2 = 0 \] **(c)** When is the particle at rest? (Enter your answers as a comma-separated list.) To find when the particle is at rest, solve: \[ 6t - 6t^2 = 0 \] \[ 6t(1 - t) = 0 \] \[ t = 0, 1 \] **(d)** When is the particle moving in the positive direction? (Enter your answer using interval notation.) The particle is moving in the positive direction when \( v(t) > 0 \). \[ (0, 1) \cup (4, \infty) \] **(e)** Draw a diagram to illustrate the motion of the particle and use it to find the total distance (in ft) traveled during the first 6 seconds. **(f)** Find the acceleration \( a(t) \) at time \( t \). \[ a(t) = \frac{d}{dt}[6t - 6t^2] = 6 - 12t \] Find the acceleration \( a(1) \) after 1 second. \[ a(1) = 6 - 12(1) = -6 \] **(g)** Graph the position, velocity, and acceleration functions for \( 0 \leq t \leq 6 \). #### Explanation of Graph - **Position Function**: The blue curve represents the position over time, showing how the particle's location changes. - **Velocity Function**: The red curve
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