Question 1: Analyze the following statements regarding one-dimensional motion and identify the correct option.
I. The sign of acceleration definitively indicates whether the speed of a particle is increasing or decreasing.
II. A particle with zero velocity at a specific instant must also have zero acceleration at that instant.
III. The kinematic equations for uniformly accelerated motion (v = vâ‚€ + at, etc.) are exact for all forms of one-dimensional motion.
IV. If a particle is speeding up, its acceleration is in the same direction as its velocity.
V. The choice of the positive direction of an axis is arbitrary, but it governs the signs of displacement, velocity, and acceleration.
