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?
1) The particle remains at rest after t = 3.0 s.
2) The particle no longer accelerates after t = 3.0 s.
3) The particle can be found at positions x < 0 m only when t < 0 s.
4) All of the above are correct.
5) None of the above is correct.
Answer: 5