Scalars vs. Vectors in Physics

Steps:

• Define scalars as quantities with magnitude only (no direction) and vectors as having both magnitude and direction.
• Check option A: acceleration and displacement are vectors.
• Check option B: velocity is a vector.
• Check option C: all (distance, pressure, temperature, time) lack direction.
• Check option D: momentum is a vector.

Why C is correct:

• Distance, pressure, temperature, and time are scalars, as they are defined by magnitude alone (e.g., distance = path length, no direction needed).

Why the others are wrong:

• A: Includes vectors like acceleration (rate of velocity change, directional) and displacement (straight-line path with direction).
• B: Velocity is a vector (speed with direction).
• D: Momentum is a vector (mass times velocity, directional).

Final answer: C