A scalar such as temperature can be negative, and there the minus sign indicates:
AA point on a scale
BA direction in space
CA vector component
DAn impossible value
Answer & Solution
Correct answer: A. A point on a scale
1. A negative number does not by itself make a quantity a vector.
2. Note that a scalar can be negative, such as a temperature.
3. In this case the minus sign indicates a point on a scale rather than a direction.
4. Temperature does not change at all with direction changes, therefore it has magnitude only.
5. Displacement's minus sign, by contrast, really does record a direction.
_Source: OpenStax College Physics for AP(R) Courses 2e (CC BY 4.0), Ch 2 'Kinematics', sections 2.1-2.8_
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