A particle moving along the x axis has a position given by x = 54t -2.0t³ m.At the time t = 3.0 s,the speed of the particle is zero.Which statement is correct? A)The particle remains at rest after t = 3.0 s. B)The particle no longer accelerates after t = 3.0 s. C)The particle can be found at positions x

Question

A particle moving along the x axis has a position given by x = 54t -2.0t³ m.At the time t = 3.0 s,the speed of the particle is zero.Which statement is correct? A)The particle remains at rest after t = 3.0 s. B)The particle no longer accelerates after t = 3.0 s. C)The particle can be found at positions x < 0 m only when t < 0 s. D)All of the above are correct. E)None of the above is correct.

Quizplus · Accepted Answer

The speed of the particle is zero at t = 3.0 s, but it does not imply the particle remains at rest or stops accelerating after this time. The particle's position can be negative for positive t values, depending on the equation.

A Particle Moving Along the X Axis Has a Position