Kaplan Nursing Entrance Practice Exam

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An object has a constant velocity of 20 m/s and travels for 20 s. What is its acceleration?

0 m/s²
1 m/s²
20 m/s²
40 m/s²

The correct answer is: 0 m/s²

An object with a constant velocity means that its speed and direction do not change over time. Acceleration is defined as the rate of change of velocity over time. If the velocity remains constant at 20 m/s, there is no change in speed or direction, which means the acceleration is zero. Therefore, the correct answer reflects that there is no increase or decrease in the object's speed or a change in its direction, confirming that the acceleration is 0 m/s². This concept highlights the relation between constant velocity and zero acceleration in physics.