UPSC NDA I 2025 General Ability Paper

Concept:Acceleration is the rate of change of velocity. If the speed is uniform, velocity does not change.Explanation:Uniform speed means the magnitude of velocity remains constant.Acceleration is given by $a = \frac{dv}{dt}$.Since velocity $v$ is constant, its change $dv$ is zero.Therefore, $a = 0$.Even if direction changes, the question specifies uniform speed (magnitude constant), so the net rate of change is zero.Hence, at uniform speed, acceleration is zero.Answer:Zero (Option C).