Particle Motion: Zero Velocity and Distance Traveled at x=0

Click For Summary
SUMMARY

The motion of a particle is defined by the equation x = t³ - 6t² - 36t - 40. The velocity is zero when the derivative of the position function, v(t) = 3t² - 12t - 36, equals zero, which occurs at t = 6 seconds. At this time, the acceleration, given by a(t) = 6t - 12, is calculated to be 24 ft/s². The total distance traveled when x = 0 is determined by solving the position equation for t, yielding a distance of 40 feet.

PREREQUISITES
  • Understanding of calculus, specifically differentiation and integration.
  • Familiarity with kinematic equations in physics.
  • Knowledge of particle motion concepts, including velocity and acceleration.
  • Ability to solve polynomial equations for real roots.
NEXT STEPS
  • Study the application of derivatives in motion analysis.
  • Learn how to solve polynomial equations using the Rational Root Theorem.
  • Explore the relationship between velocity, acceleration, and displacement in physics.
  • Investigate the implications of critical points on particle motion.
USEFUL FOR

Students studying calculus and physics, particularly those focusing on motion analysis and kinematics.

Alexanddros81
Messages
177
Reaction score
4

Homework Statement


11.8 The motion of a particle is defined by the relation ##x=t^3 - 6t^2 - 36t - 40,
where x and t are expressed in feet and seconds, respectively. Determine
(a) when the velocity is zero, (b) the velocity, the acceleration, and the total
distance traveled when x = 0.

Homework Equations

The Attempt at a Solution



Vector Mechanics Dynamics Beer P11_8 s.jpg

[/B]
Can you check my solution?
 

Attachments

  • Vector Mechanics Dynamics Beer P11_8 s.jpg
    Vector Mechanics Dynamics Beer P11_8 s.jpg
    30.4 KB · Views: 1,118
Physics news on Phys.org
It all looks correct to me. I'm not sure why you found the time when ##a = 0## or the position at that time.
 
  • Like
Likes   Reactions: Alexanddros81

Similar threads

  • · Replies 3 ·
Replies
3
Views
7K
  • · Replies 4 ·
Replies
4
Views
7K
  • · Replies 5 ·
Replies
5
Views
1K
  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 2 ·
Replies
2
Views
5K
Replies
5
Views
2K
  • · Replies 3 ·
Replies
3
Views
988
Replies
3
Views
850
  • · Replies 15 ·
Replies
15
Views
1K
Replies
2
Views
1K