Kaplan Nursing Entrance Practice Exam

What is the effect of increasing power on a moving object?

1. It decreases the speed

2. It maintains a constant speed

3. It increases the speed

4. It alters the direction

The correct answer is: It increases the speed

Increasing power applied to a moving object results in an increase in its speed. Power is defined as the rate at which work is done or energy is transferred. When more power is applied to an object, it is capable of overcoming resistance and accelerating. This is often seen in scenarios such as vehicles with more powerful engines, where the additional power allows for faster acceleration and higher top speeds. In contrast, factors such as increased weight or friction might counteract this effect, but in a simplified context where those factors are constant, more power directly translates to an increase in velocity. As a result, the ability to generate and apply greater power ultimately leads to an enhancement in the object's speed.