Question

Hunter’s velocity was 4.5 m/s. At the end of his race, his velocity was the same. Which best describes his movement?

His movement stopped.
His acceleration is zero.
His time was constant.
His acceleration was positive.

Answer 1

Considering the definition of acceleration, since the speed does not change, his acceleration is zero.

Definition of acceleration

A body has acceleration when its speed varies over time, either in magnitude or in direction.

In other words, the acceleration of a body is a physical magnitude that indicates the variation in speed experienced by a body in its displacement as a function of the time spent on it.

Therefore, a moving body is changing acceleration as its speed changes. As speed is a magnitude that considers the speed of a mobile and its direction, the changes that occur in speed will be due to variations in speed and/or direction.

Hunter’s movement

Hunter’s velocity was 4.5 m/s. At the end of his race, his velocity was the same. Since the speed does not change, his acceleration is zero.

Finally, the correct answer is second option.

Learn more about acceleration:

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