Which of the following quantities can be described by their magnitude and direction?

Question

BlackTom AI · Accepted Answer

The question asks which quantities can be described by their magnitude and direction. In physics, quantities that have both a size (magnitude) and a specified direction are called vectors.

Since the provided answer indicates 'e. acceleration,' we can explain why vector quantities like acceleration are described by magnitude and direction: acceleration tells us how quickly an object's velocity is changing and in which direction that change is occurring; its magnitude is the rate of change of speed, and its direction is the direction of that change in velocity. Units are typically meters per second squared (m/s^2).

Other common vector quantities include velocity (m/s in a direction), displacement (meters in a direction), and force (newtons in a direction). These illustrate that magnitude and direction together define the vector.

Because the answer options are not shown in the prompt (the list is empty), we cannot assess other specific choices. If any options claimed quantities that have only magnitude (such as scalar quantities like mass or temperature) or did not specify a direction, those would be incorrect for this question's criterion.

In summary, acceleration is a textbook example of a quantity described by both magnitude and direction, fitting the definition of a vector quantity.

Which of the following quantities can be described by their magnitude and direction?

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A vector A has components Ax=3A_x = 3 and Ay=4A_y = 4. How can you determine its magnitude and direction?