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Speed can never be negative while velocity can, because speed is defined as a:
AA framework
BA magnitude
CA direction
DA position
Answer & Solution
Correct answer: B. A magnitude
1. The definition of speed removes one piece of information.
2. Velocity is a vector because displacement is a vector.
3. A minus sign on a velocity indicates a direction.
4. Instantaneous speed is the magnitude of instantaneous velocity.
5. A magnitude carries no sign, so speed is never negative.
_Source: OpenStax College Physics for AP Courses 2e (CC BY 4.0), Ch 2 'Kinematics', sections 2.1-2.8_
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