Question

2 multiple choice 1 point what is a scalar quantity? a measurement with just size associated with it a measurement that has both magnitude and a direction any measured amount ratios of quantity to time a measure of how fast distance is covered

Explanation:

To determine the correct answer, we analyze each option:

• Option 1: A scalar quantity is defined as a physical quantity that has only magnitude (size) and no direction. This matches the definition of a scalar.
• Option 2: A quantity with both magnitude and direction is a vector, not a scalar.
• Option 3: "Any measured amount" is too vague and does not specifically define a scalar quantity.
• Option 4: Ratios of quantity to time describe rates (like speed, which can be scalar or vector depending on context), not the definition of a scalar.
• Option 5: A measure of how fast distance is covered is speed (a scalar in the case of average speed, but this is a specific example, not the definition of a scalar quantity).

Answer:

A. a measurement with just size associated with it