Kaplan Nursing Entrance Practice Exam

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If an object has a constant velocity of 20 m/s, what is its acceleration?

10 m/s²
20 m/s²
0 m/s²
Variable depending on time

The correct answer is: 0 m/s²

When an object has a constant velocity, it means that both its speed and direction remain unchanged over time. In physics, acceleration is defined as the rate of change of velocity with respect to time. When there is no change in velocity, the acceleration is zero. Therefore, if an object travels at a constant velocity of 20 m/s, its acceleration is 0 m/s². In this scenario, the object is not speeding up, slowing down, or changing direction. Hence, the correct conclusion is that the acceleration is indeed zero, reflecting the absence of any force causing a change in motion.