Taking into account the definition of speed and velocity, the correct answer is option b. Unlike acceleration and velocity, speed is NOT a quantity that accounts for direction.
Speed refers to the distance an object travels in a given time and is a scalar quantity.
On the other hand, velocity is a magnitude that expresses the relationship between the space traveled by an object, the time used for it and its direction. In other words, velocity refers to the interval of time it takes for an object to move towards a certain direction. Since velocity considers the direction in which an object moves, it is considered a vector character magnitude.
In summary, speed does not take into account the direction of movement, while speed implies the change of position of an object in space within a certain amount of time, that is, speed plus the direction in which said movement is produced.
Finally, the correct answer is option b. Unlike acceleration and velocity, speed is NOT a quantity that accounts for direction.
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