Particle Motion with Constant Acceleration: Solving for Time and Speed

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SUMMARY

The discussion focuses on solving the problem of a particle moving with an initial speed \( v_0 \) in the positive x direction while experiencing a constant acceleration \( a \) in the negative x direction. Participants confirm that the particle will stop before returning to its initial position \( x_0 \) and emphasize the importance of understanding the displacement formula under uniform acceleration. The key equations involved include the kinematic equations for motion, specifically those relating to displacement and velocity.

PREREQUISITES
  • Understanding of kinematic equations for uniformly accelerated motion
  • Familiarity with calculus concepts such as integration
  • Knowledge of the relationship between acceleration, velocity, and displacement
  • Basic physics concepts regarding motion in one dimension
NEXT STEPS
  • Study the kinematic equations for uniformly accelerated motion
  • Learn how to derive displacement formulas from acceleration
  • Explore integration techniques for solving motion problems
  • Investigate the implications of negative acceleration on particle motion
USEFUL FOR

Students studying physics, particularly those focusing on mechanics, as well as educators and tutors looking to enhance their understanding of particle motion under constant acceleration.

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Homework Statement



A particle leaves its initial position x0 at time t=0 moving in the positive x direction with speed v0 but undergoing acceleration of magnitude a in the negative x direction. Find expressions for 1) the time when it returns to its initial position and 2)the speed when it passes that point.

Homework Equations





The Attempt at a Solution


Wouldn't it stop first before returning to its initial position? Is it relevant that 2(xf-x0) is the total distance to return?
 
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Sure it will stop before returning. No, the total distance isn't terribly relevant. Unless you know a formula that involves it. You left the "Relevant Formulas" section blank. You know the second derivative of x(t) with respect to t is the acceleration 'a'. Can you either i) integrate that equation or ii) do you know a formula for the displacement of a particle under uniform acceleration?
 

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